NFL Connections #33, Answers
The full solution: all four groups and the 16 names, sorted from the easiest group to the trickiest.
Played at Georgia
Champ Bailey, Matthew Stafford, Todd Gurley, A.J. Green
Played at Florida
Emmitt Smith, Fred Taylor, Jevon Kearse, Percy Harvin
Played at Oklahoma
Adrian Peterson, Baker Mayfield, Sam Bradford, CeeDee Lamb
Played at Texas
Earl Campbell, Vince Young, Ricky Williams, Colt McCoy