Tampa is the obvious perpetrator here. I did a little more research and this is what I came up with for current roster salary in the playoffs with a 2020-21 salary cap of $81.5 million:
Lightning $98,840,470
Blues $90,143,266
Islanders $88,427,235
Oilers $85,603,497
Capitals $85,485,369
Jets $84,372,152
Toronto $84,162,850
Vegas $82,827,661
Penguins $82,530,744
Avalanche $82,524,228
Canadiens $82,277,688
Bruins $81,126,431
Wild $80,814,896
Predators $80,701,024
Panthers $79,862,366
Hurricanes $79,482,882
I can’t really fault teams for taking advantage of it I guess. I blame the NHL for knowing this is an ongoing issue and doing nothing to address it. $10 million in extra salary between the Lightning and Isles is pretty hard to overcome. $19 million gap between TB and FL is borderline criminal and never should have happened.