These are all subjective, opinion based lists, but I can see three solid arguments for GGG, Loma, and Ward being ranked in that top spot. GGG had an impressive ko streak going, is very solid fundamentally, and recently beat his #1 challenger in his division. Loma does things no one else can do in the ring right now, and has dominated world class fighters Like Nicholas Walters and completely outclassed them in the process. Ward hasn't been defeated since the amateurs, and has beaten better opposition than GGG and Loma combined.

I go back and forth on who I think is the best fighter today, changing my top two almost daily. Today I have Ward on top due to his longevity, and the fact that he has beaten so many tough fighters. Loma is a very close second in my opinion, because although he lost a close fight to Salido early on, he has outclassed his opponents since in a way that Ward hasn't ever been able to. GGG is a great fighter in my opinion, but p4p to me is exemplified in fighters who are able to fight bigger opponents and still dominate/win (Pac, Floyd, Roy, Hop, Evander...etc.), and I think that GGG will be ineffective if he moves out of that weight class (Hagler is the one fighter I forgive for remaining solely in one weight class his whole career since I'm a fan boy).