Who is the best at this time?

Dmitry Bivol
Adonis Stevenson
Oleksandr Gvozdyk
Badou Jack
Eleider Alvarez
Artur Beterbiev
Marcus Browne
Anthony Yarde

I'd say Dmitry Bivol. I think he'd out-box Eleider Alvarez (who I rate as the second-best) for a clear decision win.