Identifying all the 1960s QBs from jahsoul357's profile pic

16.

Green Bay had 11--Bart Starr, Paul Horning, Jim Taylor, Forrest Gregg, Jerry Kramer, Willie Davis, Henry Jordan, Dave Robinson, Ray Nitschke, Herb Adderly and Willie Wood. (12 if you count Jim Ringo who played in 1963.)

Baltimore had 5--all on offense--John Unitas, Jim Parker, Raymond Berry, Lenny Moore and John Mackey.
Art Donovan also played for the Colts in roughly the era of most of those QBs (1961 just missing the cutoff)