Windows 10/11 I prefer the dock at the bottom. Got that muscle memory
Mac os I prefer the dock to the left and auto hidden…I really don’t use it that often and find it a waste of space
Linux just depends on which desktop UI I’m using or if I’m using one. I actually don’t mind the ones that default to the top of the screen but most of what I do is either in terminal or a full screen application so I don’t much care.