The gauntlets give you 87 Overall team captains with the Cavs Gauntlet giving you LeBron, Celtics Gauntlet giving you Kyrie, Warriors Gauntlet giving you Durant, and some others not at the top of my head atm. But since the difficulty switches to All-Star at the seventh game, I still haven't completed the Wizards game from the Cavs Gauntlet.
This video shows all the unlockable Team Captains you can earn