The top compositors right now for desktop are KDE Plasma, Hyprland, Gnome/Mutter and all of them implement the Wayland protocol independently.
For game wrappers Valve makes Gamescope (https://github.com/ValveSoftware/gamescope) which is also a Wayland compositor.
When you run a game through a wrapper like GameScope it will draw to the Wayland Server that GameScope is running and then that subsequently writes to the parent display server (which can actually be X or Wayland).
Anyway it's a far superior and more secure protocol than whatever Windows is doing and you should for sure have ChatGPT explain it to you.
Gemini told me it was a good decision.
Well whatever you'll find out.