So I saw a snap in the snap store for MATE on Wayland put out by the person who is doing a lot of work on MATE and Wayland, experimental of course. So I installed it out of curiosity, however it just looped when trying to login on Wayland, however when I started my computer today, and logged in as normal a window popped up about Mir on X, and I knew that MATE was using Mir for at least one of their Wayland compositors, so I logged out and tried the Wayland session, this time it worked so Istarted messing around, most of the panel applets did not load, most of my applications did not work including caja, however Evolution and most MATE apps not tied to caja did, but I WAS RUNNING MATE on WAYLAND. It was themed in horrible Adwaita, and I could not get logged out, so I finally bought up the Run application, one of the few that actually work, and ran shutdown now -r, which worked, although it is far from perfect I'm very excited to actually be able to run MATE on Wayland. I wouldn't try this unless you like to experiment, because I messed my custom panel configuration entirely up, however thankfully I had it saved in mate tweak and restored it, so it turned out fine and was great fun experimenting with it.
MATE almost feels quicker on Wayland/Mir than it does on X