With respect to the op, I wouldn’t be looking so much at camera makes as more to glass.
It’s the lenses themselves that you want to look at.
Now if you’re talking different camera types, that’s a horse of a diff. color.
Format sizes, bellows, or even comparing certain kinds of pro end cameras there are specific differences for that.
I don’t want to start a discussion or fight over format sizes here.
But the real focus is the glass. Nikon v. Sony v canon v Minolta, v Konica v Horseman v Mamiya, the camera is simply a dark box.
The glass is where it is at.