Not sure if Slavin, Hertl, Chychrun, Debrincat would be considered underrated anymore - they're all really good and I think that's widely considered at this point.
Would replace with Pesce (still probably not underrated but more so than Slavin imo), Ferraro, Murphy/Dach (Dach to a lesser extend b/c I don't think he's underrated but maybe not as widely known), and idk for ARI, they just stink haha
Hertl isn't really underrated. I'd give it to Ferraro.
This for example I disagree with, Hertl is usually seens as a lower tier #1C while in reality he's closer to the top 10 than bottom 10 at least.
Kuraly, however, is pretty bad. Don't think Slavin or Demko is underrated. Kyle Connor is overrated, and both Chychrun and Pelech are viewed pretty accurately as really good defensemen. Rust is good but not much more. Not sure Blais is underrated, very average player.