One of the more notable examples of that is offensive lineman Joe Thuney, who left the Patriots for the Chiefs in 2021, signing a massive five-year, $80 million contract that the Patriots very easily could have (and probably should have) offered. He has since won two more Super Bowls and is now continuing his career with the Bears.
Both quarterbacks are smooth operators in the pocket with high-end escapability and the ability to make every throw on the field. Their height and overall cool demeanors are also eerily similar.