I think Kariz might be the one to beat. He has a few losses on his record but it's noticeable that they mostly came earlier in his pro career, against quality opposition, and at a higher weight.
Victor has beaten Kariz by knockout before and has a strong pro record as well, but he didn't look that impressive against Junior. Having said that, Junior may very well have been one of the top 2 or 3 in the comp and was just unlucky to (a) fight one of the big guns first up, and (b) cop the rough end of a close decision.
Nader would be the other one to consider but he looked very unimpressive against Les, and it's worth noting that Les previously battled his way to 2 draws against Israel, who tbh looked pretty sh*t.
And, oh yeah, I forgot about Daniel. He looked good but he has a few blemishes on his record too.
Hmmm, think I'll stick with Kariz as my tip.
It's interesting also that the fights were fought back in August/September, yet the results don't even get updated on boxrec until after they're televised. Very well kept secret.