New England Patriots
Bill Belichick holds the extraordinary record of being the Patriots’ only head coach since 2000. This makes the franchise an outlier on this list because of its unique relationship with him. Belichick’s achievements are legendary because he brought six Super Bowl titles to the franchise (via NBC Sports).

Furthermore, he took a chance on a sixth-round backup quarterback and made him the NFL’s greatest-ever player. Incredibly he held the Jets’ job for a day before he jumped ship and moved to Massachusetts. Now he’s the winningest head coach in NFL postseason history and an icon of the sport.