Not counting the Steam Deck, since KDE isn’t actually turned on while you’re running games.
Normally I’m a Gnome guy, but I’m building a tiny low power portable computer and wanting to keep resource utilization low, so I’m investigating other options.
I use XFCE mainly because I’m running older hardware. But I really do like it. I have been wanting to try out window managers but have just been too lazy… 😂