NFL Connections #18, Answers
The full solution: all four groups and the 16 names, sorted from the easiest group to the trickiest.
Elite left tackles
Trent Williams, Tyron Smith, Joe Thomas, Walter Jones
Hall of Fame guards
Larry Allen, Bruce Matthews, Alan Faneca, Steve Hutchinson
Dominant defensive tackles
Warren Sapp, John Randle, Ndamukong Suh, Chris Jones
Star edge rushers of today
Maxx Crosby, Nick Bosa, Micah Parsons, T.J. Watt