You read about high-morale players all the time. Players like Jaromir Jagr or John Tavares have historically been widely regarded around the league as high-morale teammates that the team chemistry seems to revolve around.
In recent memory, at least for the Carolina Hurricanes, there hasn’t been a stand-out guy on the roster in Raleigh. Sure, there have been high-morale players and leaders that have made their way in and out of the roster over the course of the past few years, but I can’t name a single guy prior to the 2017-18 season that was a stand-out morale booster.