Speaking of players with a famous grandpa, Raiders TE Darren Waller great grandpa was jazz legend Fats Waller, here he is in the classic "Stormy Weather".
https://www.youtube.com/watch?v=PSNPpssruFY
Then there was this....
https://www.youtube.com/watch?v=zBb9hTyLjfM
Hell, the short one looks like Kyler Murray,