Fedora IoT [0] is a nice intermediate solution. Despite its name, it's really good for servers, since it's essentially just the Fedora Atomic Desktops (Silverblue/Kinoite) without any of the desktop stuff. It gets you atomic updates, a container-centric workflow, and easy rollbacks; but it's otherwise a regular server, so you can install RPMs, ssh into it, create user accounts, and similar. This is what I do for my personal server, and I'm really happy with it.