I use highlyopinionated.co/swish/, the monitor is perfect for 1/3 splits or 1/6 splits. It's real "I Can't Believe It's Not A Tiling Window Manager" for macos.
I think this one may still be too big and add neck pain for lmao.
I remember buying my first large flat screen TV 55" and was in a very small duplex with a living room that was like 8 feet wide. Felt like I had to move my head to see the corners of it
It's big, but not obnoxiously so IMO, I dont have a particularly deep desk, but I haven't noticed straining to look at it. Definitely less wide than two regular 16:9 or whatever monitors.
These days I have it a little higher up with the macbook in front, using the laptop keyb + trackpad.
YMMV tho!