Pop_OS for the main PC, Ubuntu for the laptop and Debian for all the servers (lots of pis). There are 2 PCs left that run windows 10, one is the media rig and the other was an AMD APU that lived in a briefcase as part of a "totally not laptop" thing I built. Its a slow process to fully migrate away from windows, but so far im managing.
Apologies, I took it apart a few weeks ago as its bits were needed elsewhere, but I can paint a picture. You know those fancy Pelican cases, this was a DIY version of that. It was a cheap silver plastic briefcase with nerdy Linux themed stickers on the back (If it didnt have those on it would look like a nuclear football and freak someone out #ominousbriefcase) I 3D printed some standoffs and mounts for the components, fitted a 22-inch Dell monitor into the lid, used velcro to attach the printed parts and drilled a 2-inch hole in the left side which had a PVC pipe/cap end jammed in the socket to allow a surge supressor to hang out of the case.
The intent was to use it as a recording rig for my local hobby shop so I could record table top games (40K, Warmachine, Battletech, etc.) using OBS to manage cameras. It could handle 4 webcams (2 tripods, 1 ceiling mount, 1 dice cam) and a pair of lav mics. I haden't used it in about a year, but there were plans to upgrade it as there is need for it again. Its all functionally being replaced by an ATEM mini-Pro and a smaller actual laptop. Unfortunatly I have very little to show for all the nonsense as the guy on the project who was supposed to be the editor never really got around to producing something with the recordings I provided, really I just like playing with the hardware, and this season im going to do the editing myself.