

Fedora Core hasn’t been a thing in decades, it’s just Fedora or the Fedora Project now. CentOS Stream is ABI compatible with RHEL If you create a free Red Hat Developer account you can get 16 free RHEL licenses. So, yes you very much can run RHEL.
Edit: If you or anyone else is interested https://developers.redhat.com/articles/faqs-no-cost-red-hat-enterprise-linux
From what I’ve seen, they usually have an entrance fee or a drink minimum. Every one I’ve been to also makes it free for military and veterans.