I will be getting my first mac soon (I am still sad about it), which means I will need to figure out the WM. Currently I am considering yabai and amethyst. I guess now I should add AeroSpace to the list. If you are actually using tiling WM on mac, could you share which one and why?
I tried both Yabai and Amethyst and, frankly, neither provide a clean experience.
Yabai requires disabling some OS security feature iirc, which may or may not be an issue for you. I seem to recall having issues with it, and switching to Amethyst pretty soon after. It might also only support BSP layout, which I dislike - stacks all the way.
Amethyst feels a little half baked. It works well enough, but configuration is through a GUI and saved in some non text format, making it not difficult friendly. It also doesn't support things like moving windows between workspaces, meaning you need to have additional bindings for that through the MacOS command center or whatever it's called.
Overall, I managed with Amethyst for close to 2 years, so that's the one I'd recommend of the two. Luckily I'm back on a Linux machine and can use river now. :)
Good luck!