Or Auston Matthews, Sidney Crosby, Connor McDavid, Phil Kessel, Nick Backstrom, Jonathan Toews, Patrick Kane, Kyle Turris, Jakub Voracek, Steven Stamkos, John Tavares, Matt Duchene, Taylor Hall, Ryan Nugent-Hopkins, Gabriel Landeskog, Jonathan Huberdeau, Nathan MacKinnon, Aleksander Barkov, Sean Monahan, Sam Reinhart, Nikolaj Ehlers, Sam Bennett, Jack Eichel, Mitch Marner, Pierre-Luc Dubois, Matthew Tkachuk, Clayton Keller, Nico Hischier, Elias Petterson...
I stopped at the 2017 draft. But the above list are all forwards taken in the top 10 since 2005 who were regulars in the NHL by their 20th birthday AND in the top half of average time on ice among forwards on their team. I also omitted some, such as Rantanen and Ovechkin, since his birthday was so early in the season.
That's a lot of unicorns. So sad they were all ruined by being thrown in the top-6 at a young age.