Maybe I'm interpreting the OP wrong, but Matty Beniers.
I had little doubt he'd be a decent player, but such an uninspiring prospect. He's basically just a very good skater that tries hard all over the ice and he has moderate offense. He lacks high end vision, handling, and sense. He really can't make those elite offense plays you see from the top offensive players in the NHL, and it's been as true in the NHL as it was when he played at the NTDP.
I watched a few Kraken games this season, and this dude is running their PP. Completely fuels my view that someone has to score the points on every team in the NHL, and because it's a league of parity being the first pick of an expansion team that invests so many resources into you really does tend to pay off a lot and get the absolute most out of you as possible.