At this point, any distro not based on RHEL is out of the picture. It’d be quite a bit of work to leave that ecosystem and cause a lot of churn on those in the userbase that have invested time and tooling with assumption of a RHEL based distro.
The the most likely candidate right now is Rocky Linux. It’s got some founder cred (by one of the guys that started the CentOS project back in the day) and a lot of support. Assuming they hit their release targets, and all that.
Matthew Fredrickson