Aside from the obvious Leafs/Oilers....I'd put the Rangers pretty high on the list. I still don't know if they are contenders or pretenders. Even with a Vezina-level Shesterkin, last year, they fell pretty short. And Shesterkin isn't having a good year and Quick seems to be running out of gas as the season concludes.
The East is going to be a chaotic mess, this year, and could benefit from the West beating themselves up, much like when the Penguins won their cup against Nashville. The Predators were so decimated by the time they got to the SCF, it was just too much.