Tools like Yabai are interesting. I found I've wanted to learn more about people's setups in how they keep one screen config whether there's only the laptop display or 1, 2, or 3 external displays and it looks like Yabai and another one listed here is a step forward.

I use Linux and I ended up moving to i3 almost entirely because of the window and workspace management with multiple displays.

I used yabai for a while, but its general bugginess (losing windows, mishandling native tabs, SIP disable required for some functionality) eventually convinced me to try Aerospace. I have been very happy with how stable it is in comparison, though it's still not quite as nice as actual sway/i3.