Does non-theism, imply non-deism, non-pantheism, non-panentheism, and non-animism as well?
I'd say no.
However, deism is a really complicated question. I'm iffy that non-theism could imply deism. Because in some ways, I think deism actually materializes God.
The deism question, I feel, could actually make a whole thread all on its own, but it might not end up a particularly conclusive thread due to everyone's different definitions and perceptions.
Do you see a substantive difference between non-theism and ontological naturalism?
It depends.
If a non-theist is particularly learned, they might be more prone at believing in the way of ontological naturalism.
But I actually don't think that non-theism implies it, either.