NFL Connections #67, Answers
The full solution: all four groups and the 16 names, sorted from the easiest group to the trickiest.
Played at West Virginia
Tavon Austin, Adam Jones, Bruce Irvin, Geno Smith
Played at Louisville
Lamar Jackson, Teddy Bridgewater, Elvis Dumervil, Sam Madison
Played at Arizona State
Terrell Suggs, Pat Tillman, Jake Plummer, N'Keal Harry
Played at Mississippi State
Dak Prescott, Fletcher Cox, K.J. Wright, Johnathan Banks