Software KVM for Multi-monitor - Wayland support? Suggestions?

With 21.10 out and the impending march to what seems to be wayland only does anyone have a recommended software KVM to manage a multi monitor setup that will work?

I’ve been a synergy user for years but they have essentially never implemented support for wayland.

I have had a look at barrier but it seems to be the same problem… lots of promises, even a bounty, but no support.

I am considering ditching multi-monitor setup and going to an ultrawide and vnc/whatever into the other machines for display but I liked the ability to have a separate gaming pc screen to get as much out of it as possible.