of course one must ask what is a god or goddess?
As a polytheist IRL(I practice hellenisomos or greek polytheism) my view of what is a god or goddess is much more loose then someone who is used to the monotheistic view. As an example, I do believe that places can have nymphs, nature spirits, to them especially natural features, like rivers, lakes, mountains and so on.
I bring this up because when people talk about 'true gods' I always wonder what they mean by that. The elven gods may have been powerful mages, though considering they can jump bodies they have some interesting magic. they may not need to be all powerful but that doesn't mean they are no less true IMO.