NFL Connections #62, Answers
The full solution: all four groups and the 16 names, sorted from the easiest group to the trickiest.
1983 QB draft class
John Elway, Dan Marino, Jim Kelly, Tony Eason
2004 QB draft class
Eli Manning, Philip Rivers, Ben Roethlisberger, J.P. Losman
2018 QB draft class
Baker Mayfield, Sam Darnold, Josh Allen, Lamar Jackson
2020 QB draft class
Joe Burrow, Tua Tagovailoa, Justin Herbert, Jordan Love