Staubach, Aikman, Romo, White, Meredith
Landry hung on a little too long and some people remember those later years, but he was a true master of his profession, especially in the 1970's. He understood football, on both sides of the ball, as well as anyone ever has. (semi-interesting read here:
link)
Jimmy Johnson built one of the all-time great teams, had a remarkably successful run, but his tenure was relatively brief (1989 to 1993). In short, he didn't do it over the long term and so didn't face the kinds of challenges that longer tenured coaches do (e.g., making scheme adjustments to accommodate physical decline in star players or to capitalize on his maturing QB's growing expertise). Gale Sayers and Bo Jackson were truly great pro RBs players, but only for a short period of time. Johnson was like that too, I think.
Then Parcells (in Dallas).
It starts to get murky after that. Give Wade or Garrett the same team that Switzer inherited and I think there is a great chance that both Wade and Garrett win at least as many Super Bowls as Switzer. I'd be tempted to put Wade at 4 and Garrett at 5.
Gailey, Switzer, Campo ... difficult for me to differentiate much. Campo's rosters weren't very good. He wasn't either. His teams tended to play hard for him, so at least he had that.