NFL Connections #117, Answers
The full solution: all four groups and the 16 names, sorted from the easiest group to the trickiest.
Franchise passing-yards leaders
Tom Brady, Dan Marino, Brett Favre, Drew Brees
Franchise rushing-yards leaders
Emmitt Smith, Walter Payton, Barry Sanders, Franco Harris
Franchise receiving-yards leaders
Jerry Rice, Marvin Harrison, Steve Largent, Larry Fitzgerald
Franchise sack leaders
Bruce Smith, Michael Strahan, DeMarcus Ware, Reggie White