This may start a war in the replies, but let’s see!
currently I am on Manjaro with the i3 WM. switched from windows one year ago and it was the best thing I did.
Debian
Arch BTW for my personal machine and Debian for my server
Nobara on the Desktop, Pop OS on the Laptop and the Surface (needs a custom kernel though). I’d use Nobara on everything but I am too lazy to switch.
OpenSUSE Tumbleweed for my gaming PC and laptop.
On my server I run Debian oldstable until I find the time and energy to upgrade to stable. On my homeserver I run Ubuntu. Probably the latest LTS. Started out as Medibuntu to host a MythTV backend. But we haven’t watched TV in a long time so that’s not used at the moment.