Usyk is ATG. He is already GOAT CW. His HW resume is also solid. He beat Chisora and Joshua out of only three fights.
When your entire resume is built upon Wilder dethroning a 39 year champion, it dicey. On the other hand he's sill undefeated. A fight with Usyk or Joshua is are needed as both would be the best he fought if they happen. Dillion Whyte won't add much to his resume but he is the 3rd or 4th beat he fought. Rating Fury is best rated ( aren't they all ) when he retired, but in his case he has proven little and is already 33. He's lifestyle isn't to do well beyond the age of 35. I'd pace him as high as #16 now and if he looses to a mediocre talent as low as 30-35.