Charles Martin was considered a puncher when AJ was facing him. Can you call Whyte a puncher? Maybe. Breazeale was known for having a good punch too.
I'm suggesting he was considered as such when he faced AJ. Fury even said he will win the fight based off his punch power. He was 23-0-1 with 21 stoppages at the time. Even now, his 26 out of 29 are by stoppage. I'm not saying he's as hard of a puncher as Dubois, but he wasn't pillow fisted either.