Keep in mind that security is boring. You want it to be boring. Long established distributions with good team and release cycle, really good security team, and minimal software (i.e. less is more). Just mention because Fedora is a test bed really, and so not exactly what one would choose for a secure system.

This is why of the list that people provided I would personally favor Rocky (RHEL), Debian, or OpenBSD. All of the others have a lot to prove to me frankly. Not saying bad, lot were good suggestions, but they have the downsides of being less mainstream and/or more cutting edge, or more specialized.