Kamala
LeBron
Dak
Tyreek
Barry
Saquon
Michael

Michael is a good one.
When I was in college, back in the 90s, I was in a class discussion when impact of celebrity popularity was brought up. Two people got into a discussion about "Michael" that lasted a few minutes before they discovered they were talking about two different Michaels.

More examples:
Elvis
Oprah
Any player on either team by Tom Brady when he does color commentary during an NFL game.

Hey, Brady, even if you're on a first name basis with those guys, it's weird to refer to them by first name only when your audience is NOT on a first name basis with them.

It's all so weird to me. I don't understand it.