Rantanen was a beast in the playoffs, elevated his overall game to be a responsible player while still producing.
Aho is a hell of a player and if it wasn't for Marner’s defensive play I'd have Aho as number 2 on that list.
You can’t really go wrong with any of those 3 in the top spot honestly. But for me the size, skill, and playoff performance of Rantanen gives him the lead and Marner’s defence edges Aho so far. They're close enough that this order will like change throughout the season though.