I wanna give a shoutout to Manjaro, an arch based distro with a cascading testing cycle for better stability. That being said, I am using Arch and Manjaro for about a decade now and never really had any stability issues (in contrast to my tries with Ubuntu). The arch wiki stays one of the absolute best resources for Linux users on the internet, the rolling release ensures cutting edge Software, the AUR makes it very easy to provide community built packages. And then there’s Debian. Definitely my choice for servers.