Worked with/on Linux and Unix since kernel 1.2.13. This is a popularity contest, but I'll play.
Desktop: nobara44 (fedora) - putty-not-xterm, steam, lutris, chrome, seamonkey . Will consider PCLinuxOS
Day job: Solaris11, EL7(tuxcare)/9/10 , private stuff.
Night job: EL6 :-( , EL7(tuxcare)/9/f44 - putty, cinc, gitlab-ci-terraform, proxmox, vsphere, ollama