NFL Connections #49, Answers
The full solution: all four groups and the 16 names, sorted from the easiest group to the trickiest.
Won a Super Bowl (2020s)
Patrick Mahomes, Matthew Stafford, Jalen Hurts, Tom Brady
Won a Super Bowl (2010s)
Joe Flacco, Russell Wilson, Peyton Manning, Nick Foles
Won a Super Bowl (2000s)
Ben Roethlisberger, Drew Brees, Eli Manning, Brad Johnson
Won a Super Bowl (1990s)
Troy Aikman, Steve Young, Brett Favre, John Elway