Ward to me is a solid #1. He just beat Kovalev convincingly who was easily top 5 p4p IMO. Ward lost a close decision to him the first time (not according to the judges obviously) but came back and won easily. He has shown time and time again that at his best, even great fighters can't hang with him.

Crawford is a close second but he has a little more proving to do. If he goes up and beats some top welters then he may get the nod at #1. Loma is rising quickly too so he may take over that spot soon enough if he can get just one signature win. I'm still not 100% convinced that he is the best until he either beats someone very highly regarded or has another 2 years of professional experience under his belt.

Rigo is hard to judge because he is really good, but he hasn't fought much lately (maybe no fault of his own) so I'm not sure if he has declined or what. It's hard to say that he is the best if I don't see him consistently beating fighters of higher caliber.

After those 4 it drops off to the next tier of fighters (GGG, chocolatito, Kovalev). All three are still really good.

Spence should be in the top 10 and I think by next year he should be in the top 5 once Thurman fights him.