So far, all the Ways we've seen are things that can be used in every kingdom. Their usefulness can vary based on what's in the kingdom, but they can be used. Or at least almost every kingdom. Technically it could be possible to have a kingdom with no +cards or +coins, or cards with +cards and +coin in equal numbers, where Chameleon would be useless, but that's rather unlikely
I'm guessing that the remaining Ways will be the same. There won't be, for example, a Necromancer-like Way that would require some trashing to be worthwhile, unless it came with trashing itself, and if there's any Way that involves gaining from the trash, it would have to be something like Lurker that also allows you trash from the Supply, or like Rogue that gives you a trashing attack
I wonder if there'll be any Ways that will be a sort of self-referential Courtier, like, "for every type this card has, choose one:"