I'd say that Toews, Richards, and Ovechkin are in a league of their own- no one else in the league leads by example quite like these 3. They are elite talents with game breaking ability and neither of them have any huge faults as leaders.
Crosby would be there but he still complains a little too much which would annoy me, and thus not "lift me" as much, if I were on his team.
Iggy would be there too but he's slipped, along with the rest of his team, over the past couple of years.