I mean... a handful of these guys are getting consideration for the best player in their positions... Karlsson for the Norris, Sorokin for the Vezina, Robertson is the current Rocket leader, 2nd for Art Ross and has gotten Hart trophy talk, Hischier for Selke, Thompson for Calder.
Maybe before this season they were underrated, but I feel like a lot of these guys are getting plenty talked about this year.
I'd argue horvat is borderline overrated at this point. Atleast on this site. His 23% shooting percentage is 10 points higher than his career average. Someone's gonna regret overpaying him this summer.