He's a Top-6 Forward. Where that means he slots in within that Top-6, could be on the first or second line, but he belongs there, and would be there on most teams, short of a team sliding him down the roster for "spreading the wealth" reasons, weird chemistry issues, or insane winger depth.
He's not a "Top-3" Forward that i think should be anchoring or expected to really drive play on a Top-6 line as the go-to guy. Not sure i'd really expect him to be a sustainably 60pt+ sort of winger every year, in whatever Top-6 situation. But it's pretty evident that winger depth ahead of him was what pushed him down for the most part in Toronto. Heck, even playing behind Marner and Nylander, he still managed to produce at a more or less "top-6 rate" from essentially outside the Top-6.