Just a note, these are the changes I'd make to the Top-4's listed at the beginning of this thread:
TOR - Matthews, Marner, W.Nylander, Rielly
WPG - Laine, Scheifele, Ehlers, Trouba
EDM - McDavid, Draisaitl, Puljujarvi, Nurse
PHX - Domi, Strome, Dvorak, Chychrun
BUF - Eichel, Ristolainen, Reinhart, A.Nylander
TAM - Kucherov, Drouin, Namestnikov, Vasilevskiy
Out of all those groups, I think Toronto & Winnipeg's groups are flat-out awesome. You could say the same about Edmonton, based purely on McDavid, and on Draisatl as well, who looks like at the very least he's going to be a big, solid #2 center behind McDavid.
For Edmonton vs. Toronto, McDavid > Matthews, but our next three beats the hell out of their next three, and I don't think the gap between Matthews & McDavid is wide enough to make the difference. For Winnipeg vs. Toronto, Ehlers & Nylander are basically a wash, but the Leafs have the advantage in every other matchup, IMO.
After those three, everyone else is a fairly significant step down. Ristolainen might actually be better than Rielly, but Matthews is better than, or at least equal to Eichel, and Reinhart and little Nylander just aren't on the same level as big Nylander & Marner. For Arizona, all four guys are nice players, but none of them are franchise cornerstones except for maybe Strome, but the jury's still out on him.
Overall, I think I'd go:
1) Toronto
2) Edmonton
3) Winnipeg
4) Tampa
5) Buffalo
6) Arizona