Personal desktop: endeavour, though I may go back to Debian. I've been using Debian for so long that nothing else feels right, that's a me thing. Endeavour is pretty great.
Work laptop: Windows 11 (stripped down since I have admin rights), unavoidable do to some software I need to run sometimes.
Testing/builds for iOS: M2 Mac Mini
Servers: proxmox, running windows VMs for software I need for work I can rdp into, various Debian LXC's, some Oracle, RHEL, and Debian for work stuff, and occasionally random distros I want to check out.
Edit: Forgot one unique, a 13ish year old Mac mini I picked up for free (bound for recycling) that's just a glorified way to run gcompris for my kids. Straight Debian stable.
It's been overall positive, I like it, honestly my main reason to go back to Debian is it's like second nature to me. I've literally had Debian somewhere in my setup since the late 90s, probably around 2.1 I'd say.
Overall Endeavour feels like a great daily driver, I just can't tell you how many times I've had to stop myself as I typed in 'apt' or 'dpkg'.
Definitely a distribution worth checking out though!