I would be cautious with any stout bodied stars, as they would be the ones most likely to pry a clam open. Chocolate chip stars definitely out of the question, and I imagine any others with the same body style.
The linkia stars may not be powerful enough with just spindly arms to pry a clam open.
But bear in mind, all a starfish has to do is get it open enough to squish his guts in there, and that is not very wide at all, maybe 1/8" or less.
From what I understand they are relentless as well and will keep pressure on a bivalve for hours if needed to exhaust them so they relax just enough.......
think of a boa constrictor in reverse, instead of crushing, its pulling.