If it’s for work, it used to be all RHEL (or Oracle). I’m stuck with Oracle for one specific type of system, but all the RHEL is getting replaced with stable AF Debian now. Which is great, since I prefer Debian to pretty much anything else, especially for servers.
Ubuntu I have no interest in touching anymore unfortunately. It was snaps that did it for me. It’s unfortunate because it used to be a distro I really liked, but boy has canonical just been working things downhill the past several years (for me at least, I’m sure others are fine with it).
Desktop I keep swinging between Debian and endeavor, to the point where I just have them both as VMs and just swap which is active with the GPU passthrough…