For me, it has to be Lemaire.
He's proven ( won Jack Adams twice), and the Stanley Cup. Although, he may have killed exciting hockey, his brand works and every team who has won, has taken something out of his coaching/tactical abilities.
Lemaire is also known to be one of the best coaches for working with and meshing both young players and veterans. He spends much time in evolving young rookies to reach potential and demands adaption from veterans to perfect his hockey system.
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