Polonium - autotiling for KDE 5.27. Ever since KDE Plasma broke Bismuth on wayland, i've been running with bare Plasma. Polonium is the first project to work (mostly) as Bismuth used to, although it's just one developer working on it as far as i understood and it still has a bunch of bugs. But really looks promising.
Also, KDE 6 (which will break everything again probably) :D
I replaced my Nvidia with an AMD graphics card last year. Ever since ive been using Wayland on KDE Plasma without any issue. I have 2 VRR Monitors connected with different refresh rates, which felt clunky on X11 and now feels fluid and just brilliant to use. I don't use X11 Sessions at all anymore and only have XWayland for stuff that requires it