Ringo is still a chill dude, but yeah, he was the easy-going guy of the group.
John was definitely out there sometimes, and could be a real ass.
Paul, like you said, was super creative and wanted it done his way.
George was starting to really write some good stuff himself but he was always the odd man out.
You can definitely see how John and Paul brought out the best in each other. And some of the stuff where they are goofing around is priceless.
As for Yoko, she didn't interject (much) into what the guys were doing, but having her always there like that was ridiculous. Now, if George's wife had hung around the whole time, then that's ok by me...