Lightweight Modern Distro for Atom Machine?

With all the distros out there, I'm not up to date on which does what. I have an old Atom D2500 box that I want to get going. It's currently running CentOS8 but that lineage is terminated. So I've been researching options and tried Puppy OS, which can't even install from the ISO image. Oh well. Anybody have any recommendations? I'm looking for small, lightweight, where I can install modern Ruby, gems, etc. Any insight appreciated. Cheers.