imo the atmosphere that the Panthers have is a rather rare occurrence. Winning ofc helps a lot but fundamentally it boils down to individual personalities and how they treat their peers.
We saw some of the toxicity in the Leefs series when e.g. Marner goes to shout at the Leafs bench to wake up when Mariner himself did pretty much nothing in the entire series. Shows how out of tune even these so called superstars are when they actually realize that they need the entire team to work together as a cohesive unit.