Cathedral  VS Bazaar,  

Gnome: 
moving from X11 GUI to Wayland

Use: pipewire
pavucontrol, obs, scrcpy, mpv


 X questionable or partly broken softwares X

    Audio ? arecord, aplay

    Audacity: ? no Mic. Control on Ubuntu

    ffmpeg, -X- no more x11grab
    -X- mplay, broken, use mpv instead


GNOME, 
Wayland is a protocol (a set of rules), it replace X11.
Mutter is the compositor (the software that actually does the work).

The old X11 is grandfather of them.