Jayson Tatum-War Machine
Few would disagree that Boston Celtics superstar Jason Tatum isn't one of the five greatest players in the NBA today. That being said, his MCU counterpart was harder to find but War Machine seems like a fair comparison.
Tatum doesn't quite have the Tony Stark-like charisma to live up to being labeled as Team USA's Iron Man. Instead, War Machine, who is still plenty capable and a bit less larger than life, makes sense. Especially with Tatum continually going viral post-championship for his perceived corniness.
War Machine is generally one of the less serious Avengers in the MCU, with him often being the comic relief, though still an Avenger nonetheless. Tatum may not have the aura of a LeBron or a Curry but he is still both a dangerous player and a bit of a cornball at the same time.