Okay, I’m not OP but a follow up question that occurs to me reading the explanations of what Wayland is, is are there any distros or spins of distros that use Wayland by default?
Fedora uses it by default on KDE Plasma and Gnome. It even removed Xorg support for Gnome (and maybe Plasma. Can't remember). Ubuntu uses it by default with Gnome. Any distro which leaves the DEs on their default settings gets Plasma and Gnome running Wayland by default.