[httpteapot]

Does Rectangle has a shortcut to switch the focused window in a split screen?

[walthamstow]

No but Amethyst does

https://github.com/ianyh/Amethyst

[hirvi74]

Hammerspoon can do it for I have it in my config. I also have it so I can switch to open windows on the same Space (I can throw windows into a tiled view and jump around to them). It's extremely flexible if you are willing to play around with it.

[wtvanhest]

I’ve kind of solved this. You can snap windows but you need to add a shortcut in systems to do it. It’s not perfect, but it does work and overtime you miss it less and less