After trying out Cosmic, Gnome,KDE Plasma, and Hyprland, I feel like plasma is the most usable for me coming from Windows. It solves the gripes I had about lack of customizability while still starting me off with a familiar homebar. I will be going back and forth with gnome for a while.
I really like gnome and the sliding desktops, and all the extensions seem to make it very customizable as well, but not directly like plasma, instead you mix and match (or make) extensions to get the look you want. (correct me if im wrong, I used it for a day)
Hyprland seems very nice for multitasking but the keyboard focus of the presets ive tried doesn’t really appeal to me, I like being able to just use my mouse sometimes.
Cosmic, is definitely an alpha and im interested to see what it becomes, wont be using it now.
But dare you something doesn’t work as expected under plasma. Trying to figure out what causes the issue is a daunting task. Also you mentioned windows rules much, did you mean you prefer windows rules from plasma to tiling? Because setting up windows rules for all your applications is AT LEAST as bothersome as it is in any of the twms I tried/use (i3wm, river) or WMs like labwc.