8 years in Canada says he shouldn't be included in your list...
Your opinion is supported by overwhelming reality about Flutie's career trajectory, and 'conventional wisdom'.
It can only be contradicted by acceptance of the overwhelmingly absurdly stupid and ridiculous treatment of Doug, which if applied to literally anyone, Brady, Montana, or any of his inferior peers in the 90's, would have landed all of them in obscurity.
That Flutie instead rewrote the record book north of the border was no surprise to anyone paying attention (like me), and he did it for a third of the $1 million the Patriots paid Hugh Millen. It only gets sickeningly worse when one opens one's eyes to the atrocity of benching Flutie, at the end of a season in which he was primarily the reason the team was in position to compete for a championship, in favor of Tony Eason and Rob Johnson.
My assertion regarding Flutie is almost universally treated as I would be if I stated all the things insurance salesman Tom Brady could and would have done if an NFL team ever gave him a legitimate chance.
I'd scratch Plunkett from the list as well... seen enough of him to say "not a fan"...
On or off the field? Not Jim's fault the only person smart enough to pick him up after he got himself killed trying to elevate the otherwise moribund Pats & 49ers above mediocrity. The stats do support the ridiculous commonly held belief that those Raiders teams 'carried' him to those two titles.
Never In A Million Years would those teams have won it all with Pastorini, Wilson or Stabler.
Personally he's always been a stand up class guy, and he overcame serious family challenges growing up and worked his ass off to be in the eyes of many the best college player they'd ever seen. Has Stanford won a Rose Bowl without Jim the last century?