Documentation on well-known actor_id values?

[JoshuaKGoldberg]

Coming over from https://docs.github.com/en/rest/repos/rules?apiVersion=2022-11-28#create-a-repository-ruleset--fine-grained-access-tokens > bypass_actors > actor_id:

The ID of the actor that can bypass a ruleset. If actor_type is OrganizationAdmin, this should be 1. If actor_type is DeployKey, this should be null. OrganizationAdmin is not applicable for personal repositories.

That's a good and helpful start on known actor_id values. But there seem to be other well-known -or at least well-defined- values in play. For example, I've found across all repositories I've checked that the Repository admin role is 5.

Is there documentation somewhere on what those well-known actor_id values are? If not, could that be created please?

Context: this is useful for automating creation of branch rulesets. If someone wants to, say, create a standard branch protection for their default branch that exempts repo admins, they'll need to have the actor_id for bypass_actors. Pinging the GitHub API to fetch an ID that's always set to the same value would be extra complexity and time.