diff --git a/orm/hibernate-orm-6/src/test/java/org/hibernate/entities/EntityArray.java b/orm/hibernate-orm-6/src/test/java/org/hibernate/entities/EntityArray.java
new file mode 100644
index 00000000..d9e36b46
--- /dev/null
+++ b/orm/hibernate-orm-6/src/test/java/org/hibernate/entities/EntityArray.java
@@ -0,0 +1,47 @@
+package org.hibernate.entities;
+
+import jakarta.persistence.Entity;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.Id;
+import org.hibernate.annotations.JdbcTypeCode;
+import org.hibernate.type.SqlTypes;
+
+import java.util.List;
+
+@Entity
+public class EntityArray {
+
+    @Id
+    @GeneratedValue
+    private long id;
+
+    @JdbcTypeCode(SqlTypes.ARRAY)
+    private List<String> listString;
+
+    @JdbcTypeCode(SqlTypes.ARRAY)
+    private List<Integer> listInteger;
+
+    public long getId() {
+        return id;
+    }
+
+    public void setId(long id) {
+        this.id = id;
+    }
+
+    public List<String> getListString() {
+        return listString;
+    }
+
+    public void setListString(List<String> listA) {
+        this.listString = listA;
+    }
+
+    public List<Integer> getListInteger() {
+        return listInteger;
+    }
+
+    public void setListInteger(List<Integer> listB) {
+        this.listInteger = listB;
+    }
+}
diff --git a/orm/hibernate-orm-6/src/test/java/org/hibernate/entities/EntityJSON.java b/orm/hibernate-orm-6/src/test/java/org/hibernate/entities/EntityJSON.java
new file mode 100644
index 00000000..1e6a6027
--- /dev/null
+++ b/orm/hibernate-orm-6/src/test/java/org/hibernate/entities/EntityJSON.java
@@ -0,0 +1,47 @@
+package org.hibernate.entities;
+
+import jakarta.persistence.Entity;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.Id;
+import org.hibernate.annotations.JdbcTypeCode;
+import org.hibernate.type.SqlTypes;
+
+import java.util.List;
+
+@Entity
+public class EntityJSON {
+
+    @Id
+    @GeneratedValue
+    private long id;
+
+    @JdbcTypeCode(SqlTypes.JSON)
+    private List<String> listString;
+
+    @JdbcTypeCode(SqlTypes.JSON)
+    private List<Integer> listInteger;
+
+    public long getId() {
+        return id;
+    }
+
+    public void setId(long id) {
+        this.id = id;
+    }
+
+    public List<String> getListString() {
+        return listString;
+    }
+
+    public void setListString(List<String> listA) {
+        this.listString = listA;
+    }
+
+    public List<Integer> getListInteger() {
+        return listInteger;
+    }
+
+    public void setListInteger(List<Integer> listB) {
+        this.listInteger = listB;
+    }
+}
diff --git a/orm/hibernate-orm-6/src/test/java/org/hibernate/entities/EntityPlain.java b/orm/hibernate-orm-6/src/test/java/org/hibernate/entities/EntityPlain.java
new file mode 100644
index 00000000..9c7c919b
--- /dev/null
+++ b/orm/hibernate-orm-6/src/test/java/org/hibernate/entities/EntityPlain.java
@@ -0,0 +1,45 @@
+package org.hibernate.entities;
+
+import jakarta.persistence.Entity;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.Id;
+import org.hibernate.annotations.JdbcTypeCode;
+import org.hibernate.type.SqlTypes;
+
+import java.util.List;
+
+@Entity
+public class EntityPlain {
+
+    @Id
+    @GeneratedValue
+    private long id;
+
+    private List<String> listString;
+
+    private List<Integer> listInteger;
+
+    public long getId() {
+        return id;
+    }
+
+    public void setId(long id) {
+        this.id = id;
+    }
+
+    public List<String> getListString() {
+        return listString;
+    }
+
+    public void setListString(List<String> listA) {
+        this.listString = listA;
+    }
+
+    public List<Integer> getListInteger() {
+        return listInteger;
+    }
+
+    public void setListInteger(List<Integer> listB) {
+        this.listInteger = listB;
+    }
+}
diff --git a/orm/hibernate-orm-6/src/test/java/org/hibernate/test/EntityArrayLoadedFirstTestCase.java b/orm/hibernate-orm-6/src/test/java/org/hibernate/test/EntityArrayLoadedFirstTestCase.java
new file mode 100644
index 00000000..4949fff3
--- /dev/null
+++ b/orm/hibernate-orm-6/src/test/java/org/hibernate/test/EntityArrayLoadedFirstTestCase.java
@@ -0,0 +1,79 @@
+package org.hibernate.test;
+
+import org.hibernate.SessionFactory;
+import org.hibernate.boot.Metadata;
+import org.hibernate.boot.MetadataSources;
+import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
+import org.hibernate.entities.EntityArray;
+import org.hibernate.entities.EntityJSON;
+import org.hibernate.entities.EntityPlain;
+import org.hibernate.mapping.PersistentClass;
+import org.hibernate.type.Type;
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Test;
+
+/**
+ * This template demonstrates how to develop a standalone test case for Hibernate ORM.  Although this is perfectly
+ * acceptable as a reproducer, usage of ORMUnitTestCase is preferred!
+ */
+public class EntityArrayLoadedFirstTestCase {
+
+	private Metadata metadata;
+	private SessionFactory sf;
+
+	@Before
+	public void setup() {
+		StandardServiceRegistryBuilder srb = new StandardServiceRegistryBuilder()
+			// Add in any settings that are specific to your test. See resources/hibernate.properties for the defaults.
+			.applySetting( "hibernate.show_sql", "true" )
+			.applySetting( "hibernate.format_sql", "true" )
+			.applySetting( "hibernate.hbm2ddl.auto", "update" );
+
+		metadata = new MetadataSources( srb.build() )
+		// Add your entities here.
+			.addAnnotatedClass( EntityArray.class )
+			.addAnnotatedClass( EntityJSON.class )
+			.addAnnotatedClass( EntityPlain.class )
+			.buildMetadata();
+
+		sf = metadata.buildSessionFactory();
+	}
+
+	// Add your tests, using standard JUnit.
+	@Test
+	public void hhh17680Test() throws Exception {
+		var modelEntityArray = metadata.getEntityBinding(EntityArray.class.getName());
+		var modelEntityJson = metadata.getEntityBinding(EntityJSON.class.getName());
+		var modelEntityPlain = metadata.getEntityBinding(EntityPlain.class.getName());
+
+		// Entities with JdbcTypes JSON and ARRAY should have different types
+		Assert.assertNotEquals(
+				"Entity with JdbcType ARRAY and entity with JdbcType JSON should have the different types",
+				getPropertyType(modelEntityArray, "listString"),
+				getPropertyType(modelEntityJson, "listString")
+		);
+		Assert.assertNotEquals(
+				"Entity with JdbcType ARRAY and entity with JdbcType JSON should have the different types",
+				getPropertyType(modelEntityArray, "listInteger"),
+				getPropertyType(modelEntityJson, "listInteger")
+		);
+
+		//
+		Assert.assertEquals(
+				"Entity with JdbcType ARRAY and entity without JdbcType should have the same types",
+				getPropertyType(modelEntityArray, "listString"),
+				getPropertyType(modelEntityPlain, "listString")
+		);
+		Assert.assertEquals(
+				"Entity with JdbcType ARRAY and entity without JdbcType should have the same types",
+				getPropertyType(modelEntityArray, "listInteger"),
+				getPropertyType(modelEntityPlain, "listInteger")
+		);
+	}
+
+	private Type getPropertyType(PersistentClass model, String property) {
+		return model.getProperty(property).getType();
+	}
+
+}
diff --git a/orm/hibernate-orm-6/src/test/java/org/hibernate/test/EntityJsonLoadedFirstTestCase.java b/orm/hibernate-orm-6/src/test/java/org/hibernate/test/EntityJsonLoadedFirstTestCase.java
new file mode 100644
index 00000000..4a6c865a
--- /dev/null
+++ b/orm/hibernate-orm-6/src/test/java/org/hibernate/test/EntityJsonLoadedFirstTestCase.java
@@ -0,0 +1,78 @@
+package org.hibernate.test;
+
+import org.hibernate.SessionFactory;
+import org.hibernate.boot.Metadata;
+import org.hibernate.boot.MetadataSources;
+import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
+import org.hibernate.entities.EntityArray;
+import org.hibernate.entities.EntityJSON;
+import org.hibernate.entities.EntityPlain;
+import org.hibernate.mapping.PersistentClass;
+import org.hibernate.type.Type;
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Test;
+
+/**
+ * This template demonstrates how to develop a standalone test case for Hibernate ORM.  Although this is perfectly
+ * acceptable as a reproducer, usage of ORMUnitTestCase is preferred!
+ */
+public class EntityJsonLoadedFirstTestCase {
+
+	private Metadata metadata;
+	private SessionFactory sf;
+
+	@Before
+	public void setup() {
+		StandardServiceRegistryBuilder srb = new StandardServiceRegistryBuilder()
+			// Add in any settings that are specific to your test. See resources/hibernate.properties for the defaults.
+			.applySetting( "hibernate.show_sql", "true" )
+			.applySetting( "hibernate.format_sql", "true" )
+			.applySetting( "hibernate.hbm2ddl.auto", "update" );
+
+		metadata = new MetadataSources( srb.build() )
+		// Add your entities here.
+			.addAnnotatedClass( EntityJSON.class )
+			.addAnnotatedClass( EntityArray.class )
+			.addAnnotatedClass( EntityPlain.class )
+			.buildMetadata();
+
+		sf = metadata.buildSessionFactory();
+	}
+
+	// Add your tests, using standard JUnit.
+	@Test
+	public void hhh17680Test() throws Exception {
+		var modelEntityArray = metadata.getEntityBinding(EntityArray.class.getName());
+		var modelEntityJson = metadata.getEntityBinding(EntityJSON.class.getName());
+		var modelEntityPlain = metadata.getEntityBinding(EntityPlain.class.getName());
+
+		// Entities with JdbcTypes JSON and ARRAY should have different types
+		Assert.assertNotEquals(
+				"Entity with JdbcType ARRAY and entity with JdbcType JSON should have the different types",
+				getPropertyType(modelEntityArray, "listString"),
+				getPropertyType(modelEntityJson, "listString")
+		);
+		Assert.assertNotEquals(
+				"Entity with JdbcType ARRAY and entity with JdbcType JSON should have the different types",
+				getPropertyType(modelEntityArray, "listInteger"),
+				getPropertyType(modelEntityJson, "listInteger")
+		);
+
+		//
+		Assert.assertEquals(
+				"Entity with JdbcType ARRAY and entity without JdbcType should have the same types",
+				getPropertyType(modelEntityArray, "listString"),
+				getPropertyType(modelEntityPlain, "listString")
+		);
+		Assert.assertEquals(
+				"Entity with JdbcType ARRAY and entity without JdbcType should have the same types",
+				getPropertyType(modelEntityArray, "listInteger"),
+				getPropertyType(modelEntityPlain, "listInteger")
+		);
+	}
+
+	private Type getPropertyType(PersistentClass model, String property) {
+		return model.getProperty(property).getType();
+	}
+}
diff --git a/orm/hibernate-orm-6/src/test/java/org/hibernate/test/EntityPlainLoadedFirstTestCase.java b/orm/hibernate-orm-6/src/test/java/org/hibernate/test/EntityPlainLoadedFirstTestCase.java
new file mode 100644
index 00000000..44c02f54
--- /dev/null
+++ b/orm/hibernate-orm-6/src/test/java/org/hibernate/test/EntityPlainLoadedFirstTestCase.java
@@ -0,0 +1,79 @@
+package org.hibernate.test;
+
+import org.hibernate.SessionFactory;
+import org.hibernate.boot.Metadata;
+import org.hibernate.boot.MetadataSources;
+import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
+import org.hibernate.entities.EntityArray;
+import org.hibernate.entities.EntityJSON;
+import org.hibernate.entities.EntityPlain;
+import org.hibernate.mapping.PersistentClass;
+import org.hibernate.type.Type;
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Test;
+
+/**
+ * This template demonstrates how to develop a standalone test case for Hibernate ORM.  Although this is perfectly
+ * acceptable as a reproducer, usage of ORMUnitTestCase is preferred!
+ */
+public class EntityPlainLoadedFirstTestCase {
+
+	private Metadata metadata;
+	private SessionFactory sf;
+
+	@Before
+	public void setup() {
+		StandardServiceRegistryBuilder srb = new StandardServiceRegistryBuilder()
+			// Add in any settings that are specific to your test. See resources/hibernate.properties for the defaults.
+			.applySetting( "hibernate.show_sql", "true" )
+			.applySetting( "hibernate.format_sql", "true" )
+			.applySetting( "hibernate.hbm2ddl.auto", "update" );
+
+		metadata = new MetadataSources( srb.build() )
+		// Add your entities here.
+			.addAnnotatedClass( EntityPlain.class )
+			.addAnnotatedClass( EntityJSON.class )
+			.addAnnotatedClass( EntityArray.class )
+			.buildMetadata();
+
+		sf = metadata.buildSessionFactory();
+	}
+
+	// Add your tests, using standard JUnit.
+	@Test
+	public void hhh17680Test() throws Exception {
+		var modelEntityArray = metadata.getEntityBinding(EntityArray.class.getName());
+		var modelEntityJson = metadata.getEntityBinding(EntityJSON.class.getName());
+		var modelEntityPlain = metadata.getEntityBinding(EntityPlain.class.getName());
+
+		// Entities with JdbcTypes JSON and ARRAY should have different types
+		Assert.assertNotEquals(
+				"Entity with JdbcType ARRAY and entity with JdbcType JSON should have the different types",
+			getPropertyType(modelEntityArray, "listString"),
+			getPropertyType(modelEntityJson, "listString")
+		);
+		Assert.assertNotEquals(
+				"Entity with JdbcType ARRAY and entity with JdbcType JSON should have the different types",
+				getPropertyType(modelEntityArray, "listInteger"),
+				getPropertyType(modelEntityJson, "listInteger")
+		);
+
+		//
+		Assert.assertEquals(
+				"Entity with JdbcType ARRAY and entity without JdbcType should have the same types",
+				getPropertyType(modelEntityArray, "listString"),
+				getPropertyType(modelEntityPlain, "listString")
+		);
+		Assert.assertEquals(
+				"Entity with JdbcType ARRAY and entity without JdbcType should have the same types",
+				getPropertyType(modelEntityArray, "listInteger"),
+				getPropertyType(modelEntityPlain, "listInteger")
+		);
+	}
+
+	private Type getPropertyType(PersistentClass model, String property) {
+		return model.getProperty(property).getType();
+	}
+
+}