I think the defensive minded teams with little changes from last year will see the biggest advantage. They know what they're going to do, and don't need to work on scoring chemistry as much as other teams who might have had to add 2-4 players through the offseason.
Teams with elite goalies as well. A 40-50 game stretch can see an elite level goalie get hot, stay hot, and really tear it up.
Teams with new headcoaches are going to be ****ed. No camps, no preseason and a likely new system? Yikes.