I would put Starr as most influential for the city, the team, the franchise, and one of the top in the entirety of the NFL. Favre helped with a revival of the Packers after a 30 year drought of Super Bowls, but this franchise was also loaded with life long fans all over the country and despite losing for a long time, had one of the strongest fan bases in the entire league . Favre just brought them extra juice but along with all these new fans, I wonder how many of them would stick with the team like they did thru 3 decades.
I never got to see Hutson, Starr etc. they all played their part and were all vital to the success of the team and franchise. It's hard for me to separate them out. But the QB sneak in the Ice Bowl has got to be one of the most dramatic instances in sports history.
4th down, used last time out, this was IT. There was no do over. On a drive that went almost 70 yards on a sheet of ice, it ended with the QB calling his own number and telling the coach is immortalized in NFL lore he was calling the play and went and won it.
I'm a little biased, but it's one of the greatest plays not only in Packer history, but in NFL history. It helped catapult the league and it's popularity, the weather, the call, the man. I know so many other things don't happen if all those other guys weren't great too, it's why I can't chose a "best", but I would choose that moment and that play as the best for this franchise. So if pressed, i'd have to lean towards Starr as being the greatest Packer.
and that's just considering what he did on the field, off the field? Well, his off the field accomplishments probably rival his sports greatness. Not many men can do that in their life.