i’ve been using sonobus lately and it’s been pretty good, I had latency issues when I tested the android app a long time ago, ill have to test it again
You could probably look into something like paperwm or Niri, I think scrollable window managers have a lot of potential to be a novel but good touch experience
EDIT: Im not sure if niri support touch, I havent tested it, but I think i might actually try it myself when I get the chance now
it’s not accurate to say android is centred on touch input. Android has some of, if not the most diverse input options, mouse and keyboard works fine, also there is a large library of apps compatible with remotes/gamepads. While that might be how a lot of people normally interact with it, android is very well developed to be diverse
android as desktop works pretty decently actually, it can be quite nice when you set it up, especially for lower end hardware, and ofc, if you need more flexibility, you can run linux in a chroot and use x11 to bring the screen to the android env. or go vice versa and use waydroid in linux and your desktop, then simply swap out when you dont need it. (though waydroid can be harder on low end hardware)