I'd love to know about Wayland support as well. I'm pretty stuck on Alacritty right now, but I'll always check out something else compatible that has sixels and ligature support.
I believe it supports sixels and ligatures (but I haven't tried those, I don't care much about them).
It works on Wayland - I'm running it under Sway and I'm very happy with it. It also supports server/daemon mode where server does all the rendering and shares glyph cache between windows - lower memory usage & faster startup.