There were only four actual "Super Bowls," i.e., the NFL champion playing the AFL champion, 1967-70, and only in the last two of these was the Super Bowl champion (Jets, Chiefs) a team other than the NFL champion.
So a better list would include ALL the NFL championship games, not just the "Super Bowls."
I'm from Chicago. The 1963 pre-"Super Bowl" Bears were as much NFL champion as the 1985-86 Bears.
I usually trick folks up when I ask them how many NFL championships have the Vikings won? Most of them don’t realize that the ‘69 Vikes were the last NFL champs before the merger.