I've always felt like multiple desktops (on all 3 OSes) have untapped potential, but like you its never worked for me. But hope springs eternal - I try it again every now and then. I'd like to hear more about how some people use it.
Heard good things about Rectangle. I'll check it out.
UX does differ somewhat between, Linux distros & WMs (and Chrome OS, to the extent you consider it Linux proper), and between releases of all three OSes; but within families they maintain broad continuity. I use multiple variants - again daily - and my point stands that all have untapped potential.
But I doubt you supposed otherwise, nor honestly think I'm unaware of other OSes... so why take the time to ask? Pedantry? Did I slight an OS you favor?