Here's my list of active ATGs, not in any particular order: Inoue Canelo Usyk Contenders/Arguable: Crawford Spence Beterbiev Chocolatito Who else?
I agree with your list, except that I'd replace Beterbiev with Estrada. *Edit, I'd exclude Spence and Crawford but include the winner.
Lets get one thing straight. Canelo is the greatest active ATG by a considerable margin. No one else comes close to what this man has accomplished in the sport.
What has he accomplished exactly? Canelo is very very good but he has 1 very good win and 2 good ones. GGG, Plant and an old Kovalev. not sure how much credit he gets for beating names like Mosley or Cotto. They were old and severely undersized compared to him.
If Crawford beats Spence, he has a case. If Beterbiev beats Bivol, or if Bivol beats Beterbiev, it's arguable.
Beterbiev has knocked out every man he's ever fought, but ATG is an extremely high bar. He has 1 excellent win. But the rest of his resume is thin. Guys like Smith Jr., Johnson, Browne, etc. are all majorly flawed fighters. His resume besides Gvozdyk isn't that impressive under the scrutiny of ATG standards. And Beterbiev is my favorite active fighter, but the names outside Gvozdyk are not there.
I'm torn on Beterbiev. He's excellent and knocks out everyone but really does have a thin resume for a prospective ATG. He definitely needs Bivol. I consider, too, though, that he's probably a top 5(?) all-time LHW champion and that counts for something.
There's not much he can do other than fight the best and win. He took on all comers and he can't move to Cruiser, which is 25 lbs north. When you're one of the top dogs, if not the top dog, nobody below can make a name for themselves.
Fury Usyk Definitely not ginger nut Bivol if the competition keeps coming and he boxes Berbs nut off which he will. Spence after he chins Crawford That's about it.
If there was a new hungry young lion who had been blasting out everybody or shutting out all the other top guys in the division then that would be a big deal. But the answer is Bivol. Must fight Bivol.
Beterbiev can only fight who is available and is not responsible for those ducking him or the politics involved. Bivol's status at LHW rests on his victory over Canelo; someone who met his ceiling at LHW and whose best body of work was at 154-168lbs. H2H at LHW is a handful for ANYONE. It's just a shame he is 5 or so years removed from his absolute prime..