SizeUp isn't a tiling window manager as far as a youtube video showcasing it goes and neither is Rectangle. It's more like an alternative to the Windows aero snap thing.
A tiling window manager is a different concept.
A tiling window manager is a different concept.
I'm sorry but objectively macOS window management is wholly subpar compared to the options on Linux.
Rectangle is a literal hack on top that hopefully works when you need it. Rectangle is great, but Rectangle, Yabai and whatnot can only hope that the undocumented private APIs that macOS _allows_ them to use today don't mysteriously break tomorrow.
Meanwhile a Linux window manager actually does its full job unencumbered because it's a _real_ first class window manager and not a hack.