NFL Connections #98, Answers
The full solution: all four groups and the 16 names, sorted from the easiest group to the trickiest.
Cowboys quarterbacks
Troy Aikman, Roger Staubach, Tony Romo, Dak Prescott
Cowboys running backs
Emmitt Smith, Tony Dorsett, Ezekiel Elliott, DeMarco Murray
Cowboys pass catchers
Michael Irvin, Dez Bryant, CeeDee Lamb, Jason Witten
Cowboys defensive legends
Bob Lilly, Randy White, DeMarcus Ware, Micah Parsons