NHL has William just ahead of Mitch. The NHL list is tough to argue with but nevertheless it shows the 2 are very close.
Nathan MacKinnon, F, COL
2. Connor McDavid, F, EDM (INJ.)
3. Leon Draisaitl, F, EDM (INJ.)
4. Nikita Kucherov, F, TBL
5. Alex Ovechkin, F, WSH
6. Brady Tkachuk, F, OTT
7. David Pastrnak, F, BOS
8. Mikko Rantanen, F, DAL
9. Kyle Connor, F, WPG
10. Jack Eichel, F, VGK
11. Sam Reinhart, F, FLA
12. Mark Scheifele, F, WPG
13. Auston Matthews, F, TOR
14. William Nylander, F, TOR
15. Mitch Marner, F, TOR
16. Filip Forsberg, F, NSH
17. Martin Necas, F, COL
18. Brayden Point, F, TBL
19. Sidney Crosby, F, PIT
20. Tim Stützle, F, OTT
21. Jason Robertson, F, DAL
22. Jake Guentzel, F, TBL
23. Nick Suzuki, F, MTL
24. Cole Caufield, F, MTL
25. Lucas Raymond, F, DET
26. Dylan Larkin, F, DET
27. Wyatt Johnston, F, DAL
28. Brandon Hagel, F, TBL
29. Clayton Keller, F, UTA
30. Matt Boldy, F, MIN
31. Tom Wilson, F, WSH
32. Tage Thompson, F, BUF
33. Artemi Panarin, F, NYR
34. Macklin Celebrini, F, SJS (rookie)