I've been watching the highlights on him and he can score from everywhere, in any situation, against guys that are already bigger and stronger than him. He will no doubt be a prolific scorer in the NHL for years.
He scores off the rush, on the PP, from the goalmouth...he's diving for loose pucks, fighting off defenders, gaining position on breakways...he's just a pure scorer.
Having said that, I know nothing about the other aspects of his game. TBH it might not even matter.
What I really notice is how good is at evading defenders and getting himself open in the offensive zone. I also noticed how good Jack Hughes is at drawing defenders to him, which no doubt contributes to Caufield finding space (I think this could matter at the NHL level but Kotkaniemi has that knack as well). You can tell which teams are prepared to defend both players and it doesn't make a difference. Caufield's size works to his advantage in that way in which he doesn't need a lot of space to get off his insane shot. He moves an inch off the defender and the puck is in the net.
On the PP, where I think he will be the most valuable, he is lethal from the left side of the ice at any range and at any angle...but is also a serious threat from the bumper spot in the slot opening up options from the half wall and below the goal line.
We're going to love him.