"But I find it highly doubtful that one god known for goat horns would have been portrayed as having rams horns."

I think I agree with you here. I wasn't trying to say that they were the same deity, or that one set of horns is as good as the next, more arguing that they embody similar ideas. Both rams and goats horns, for example, could be seen as symbols of masculinity. I wonder if the goat and the ram gods have a common ancestor... (and I genuinely don't know)