Personally i prefer two computers, two monitors, one mouse/keyboard.

Deskhop has been a lifesaver https://github.com/hrvach/deskhop

For macs, if you're signed into the same Apple account on both, you can "share" the same keyboard and mouse across them.

It does tend to be finicky - sometimes it just refuses to connect, and won't tell me why, and sometimes it'll forget the arrangement. And it requires you to be signed into one account on two machines, which some people may not want to do on corporate laptops.

I do the same but with a usb-c dongle. For whatever reason my brain needs a hard reset when switching between tasks otherwise my productivity nose dives.