Who's the next star

Zander Xayas, maybe. Jared Anderson could've been it but if you take him at his word he's not going to challenge himself.

ryan garcia if he wins his next fight.

The most casual popularity.....casual fans drive all sports I'm not too sure if that alone makes a star, because if that becomes the definition then the next "star" of boxing is the boxer with the most followers on Social Media, which suddenly makes the Paul brothers a "boxing superstar" and Ryan Garcia will be near the top of active boxing stars. In fact, purely by social media followers Garcia has more than 10x that of Bud.

Blair the Flair.

Depends on how you define "star"...do you mean the guy that commands the highest purse, regardless of resume? Or the guy with the best record/results/belts? The one with the most casual popularity? The most casual popularity.....casual fans drive all sports

Depends on how you define "star"...do you mean the guy that commands the highest purse, regardless of resume? Or the guy with the best record/results/belts? The one with the most casual popularity?