He's knocked out basically everybody. I do agree Jake can box, but he's going after nobodies now saying he's fighting "pro's", because he was receiving backlash for going after retired MMA fighters, and challenging them to boxing, or guys on their way out. Andre August didn't have a fight in 4 years, before his fight with Jake. He's cherry picking fighters.
The only time he fought a boxer which I consider a pro is Tommy Fury, and he lost by decision. I think Jake does take the rematch, if it ever happens.
His next fight is against a nobody. I seen a post about it today. I think Jake Paul fights next on March 3rd.