Who beats Greb at middleweight?

Accomplishments wise it’s hard for me not to call LaMotta a poor man’s version of Greb, and Robinson did struggle greatly in most of the LaMotta fights. Most notably in fights 2, 3 and 5

We have footage of Greb’s competition and the descriptions in which he was described dominating them incredibly thoroughly. I can’t say LaMotta would’ve had the same success against Greb’s opposition