5. Ryan Lindgren
The 49th overall pick in 2016, Ryan Lindgren is a defensive defenseman who has played over 250 NHL games at the age of 25. He was drafted by Boston and traded to the Rangers in 2018 as part of a package for Rick Nash. He doesn't score much - only 7 career goals (!!!) and 63 points - but he's a tough, hard-to-play-against guy who kills penalties and isn't afraid to be physical, with183 career penalty minutes.
257 NHL games is nothing to sneeze at, and I certainly wouldn't mind if the Islanders get a serviceable defensive defenseman out of this pick. But the list gets more impressive from here, with players who have long, impressive NHL careers.