125: Cejudo if he beats DJ in a rematch and keeps the belt for awhile, plus fights the 135lb Champ.. he could be a star with the Hispanic crowd and with young College and International Wrestlers. But I think Ortiz beats Cejudo if they fight. I also think DJ beats Cejudo easily in a rematch.
135: The UFC was banking on Cody to be one of the next stars, but with his two losses to TJ, he needs to win a few more fights, finally beat TJ, get the belt back and defend it for awhile, before he becomes that "mega star" that the UFC once hoped he would be.. he's still young, so it could happen.
145: Max was on the way to becoming the next star, and a win over Ortega and then a run at the 155 belt, would have solidified that. But with his unknown injury, we don't know if Max will be the same.. only time will tell with Max and the level of his fame. If Ortega gets the belt, and goes on a run defending it, then goes up to 155lb wins and eventually gets that belt, that kid could possibly become a huge star in the UFC. At Staples over the weekend, he received the biggest applause from the crowd, and was constantly being asked to sign autographs.
155: If Khabib beats Conor, he is prob the next big star in the UFC. He is already huge in Russia/Eastern Blocc countries, NY, plus very well received in the SF Bay Area and Nor*Cal, and slowly becoming a known name to those outside of the MMA community of fans and casuals. But I think Gillespie beats him at 155 if they ever fight. If Nate beats Dustin and wins the third fight with Conor, Nate will ride off into the sunset as one of the biggest stars in the UFC.
170: If Holland comes down to WW from MW, can put a long winning streak together and win the belt in doing so, that kid is going to be a star. In LA, celebs were still talking about him after his fight and fans in attendance took to his in cage demeanor, even though he lost the fight.
185: If Whittaker wasn't getting injured everytime he fought, he would already be a star in the making, but as of now, he wins and then can't market himself nor can the UFC, because he's injured and recovering. I believe Adesanya or Costa, could either be the next star in the division and in the UFC, but both need to fight more, keep winning, win the belt and fight one another.
205: I still think it's odd that DC hasn't become a bigger star then he is.. But for whatever reason, he hasn't caught on with the masses like one who is a fan of him, would've expected. Had Tyson Pedro not lost the fights he's lost, I think he had potential to be a star, but as of now, I don't see it happening like so.
HW: If Tai wins the belt, and defends it longer then Stipe did, he is going to be a huge star internationally. He is already well received in the states, parts of Europe and obviously in Aus, plus New Zealand. He has that personality and charisma that mma fans, casuals and celebs can take to. Plus, he's a finisher in the cage. If he continues to develope his skill set, and work on his cardio, he will go far in MMA.
WMMA: Rose needs to market herself a bit more, the UFC needs to do so also. In LA, she was acting more loose, and seemed to be having fun in the crowd and while out and about. That's the side of herself, that most don't see often. That loose side, plus her usual stoic demeanor during fight week and her continuing to win in the cage, should make her the next big women's MMA star.. plus if she goes up to 125 and wins that belt, then she would be the first women's UFC double Champ.