This is a preset implementing Rectangle keyboard shortcuts for window management:
Rectangle.bttpreset (60.3 KB)
I reimplemented most of them (the ones I use, including cycling through 1/2, 1/3, 2/3):
Sharing it here as I was looking for such a present and didn't see one.
(Note that the cheatsheet above shows fn in some of the combos, which is actually not in them. That looks like a bug in the cheatsheet display.)