This is tough because there are guys on the list who have a more proven track record (Kane, Giroux), there are guys on the list who have the potential to do it if last season wasn't just a one-off (MacKinnon, Hall, Barzal), and there are guys on the list who have the right situations to do it because of elite linemates (Kuznetsov).
I think I'll opt for Kane since he's the only one on the list with an actual Art Ross to his credit. Ovechkin doesn't count because he doesn't get nearly enough assists these days to do it.