I think Vince Young and Tim Tebow are locks. The other two are tougher, but the quarterback position has also become far more important in the last 40 years, so most of the best are pretty recent. Trying to overcome that bias, what about Frazier? Brees? Staubach? Plunkett? Lujack? Pat Sullivan? You guys are tired of me mentioning John Elway. Dan Marino? More recently, RGIII and Cam Newton are candidates. Matt Leinert? Manziel? Mayfield? Lawrence? Luck? Winston? Mariota? Tagovailoa? An embarrassment of riches in the last 20 years.
I guess I didn't follow the rules, so...
Tim Tebow
Vince Young
Roger Staubach
Johnny Lujack