I use Alma because RHEL is designed for enterprise stability. Debian is also a good option.
Just don't use Ubuntu. They do too much invisible fuckery with the system that hinders use on a server. For basic desktop use it's fine, but never for a server.
Edit: but you should be doing most stuff in Docker anyway, so the actual OS isn't going to matter too much. If you're already comfortable with one base (Debian, RHEL) just use that one or a derivative.