Opensuse tumbleweed. Its rolling release and gets lots of packages and is pretty stable NASA uses opensuse for there computers. I run tumbleweed on my laptop and btfs is really good and i havent had any issues minus one time i forced powered off while it was updating and it broke zypper. Plus side tho is the live boot can "upgrade an install and fix things like broken package managment. Aswell as opensuse is based off of rhel so package support is really good