Andre Ward will probably be put on top of PFP lists by American scribes, but he won't have the popularity or pull. Anthony Joshua might be up there.
I'm factoring in age and guys I see being closer to their absolute primes in 3 years time so I removed Kovalev, GGG and Rigo from my top 5: Crawford, Lomachenko, Thurman, Gonzalez, fifth is a toss up between a few guys but I think Mikey Garcia can still be a P4P stalwart if he's able to resume his career and get through his promotional issues with TR.
Terence Crawford: He's the complete package Vasyl Lomanchenko: see number 1 GGG: Obvious Errol Spence: Speed and defense on point