I think Luchanko is underrated, having watched him in the AHL playoffs.
He's a true 18 year old and held his own. Won't turn 19 until the end of August.
His been buried in a black hole in Guelph, where Kazin was his only NHL prospect linemate, and the HC split them up.
Same with Bonk, who scored at a high rate given his role was primarily defensive (Dickinson is the offensive defenseman). You could see a big dropoff defensively when he wasn't on the ice.
What they both have in common is the lack of flashy skills that play better at lower levels, but are full sized, high IQ two way players who'll quickly adjust to the NHL game.
Bjarnson has steadily progressed in the CHL, but hasn't played at a level yet that says top goalie prospect, but goalies often take time to develop, I expect at least 2 years in the AHL before they know what they have in him.
Nesbitt is a gamble they can improve his skating, worked with Foerster who'd be top 15 in a re-draft - not too many 20 goal scorers who are close to elite defensively. If Nesbitt can improve to average or so as a skater, he has the tool kit to be a big goal scoring center. Not sure I'd gamble that high in the draft, but full sized true centers are hard to find.