I used whatever the default Ubuntu DM is (gnome, not sure the version) for a while, because I got a new computer and didn't feel like messing around with .config stuff. Tuned it a little -- actually the gnome tweaks and plugins system is pretty nice! I had an applet that could control my smart-bulbs, and there's one that will invert a window color (I'm sure this is possible in sway but it would probably involve come obscure program I might need to compile).
But in the end the draw of proper keyboard controls over my WM is too appealing, switched back to sway.
IIRC, one thing that kind of kept me on the floating WM was Zoom. I think the general Zoom workflow depends on drawing a lot of windows of various random sizes, closing and opening them automatically, etc etc. It is a pretty dumb application (but it was mandated from on high, so...).
I've switched to windows because of laziness and need to reconfigure my dotfiles after like 6 years of using i3. This week I'm getting a new m2 disk and will be installing arch to finish my rice.
Openbox is extremely minimalist and customizable. I use it for games, gimp, and occasionally gui application development. You can add directional selection keybindings etc. so it keeps a tiled-esque feel.
I dumped a shellscript in my ~/.zprofile where I can easily switch wms and X configurations without logging out (keep mounts, music, etc). It makes it really painless to switch.
I did love the fact that all shortcuts started with the superkey though. That meant no overlap with any ide (I am looking at you, gnome).
In the end it was much faster to use the switchers in more traditional managers like Gnome and while you can stack/tab windows they still take up space.
Finally, and I think most importantly, while I was using an ultrawide screen at the time, and it was definitely nice to be able to easily split it in two or three windows quickly, I mostly don't need a tileable screen.
then i realized i could just run a full screen terminal on one desktop and run tmux within it. it can be a little annoying with just one screen but otherwise great.
(incidentally, i also used to be a window maker person, and an actual nextstep person... after those two i ran something extremely lightweight, with small thin window decorations and that's it. i cannot remember the name)
is it good? like if i'm doing something new and something new wants to pop a floating window, can i just keep doing my thing or do i have to start thinking about my window manager?
i find that dedicating a screen to tmux and another screen to a classic desktop environment gives the best of both worlds. (subject to the limitation of becoming dependent on multiple screens)