I love the interpretations of more eldritch and otherworldly looking Ainur, it's just an aesthetic I really like and a concept I can get behind.
Like imagine Varda who is basically a vaguely human shaped figure, but her skin is made out of the night sky, her eyes are burning brighter than the lightest stars in the sky, her hair a constantly twirling mass which looks like several galaxies stuck together. Fantastic. Ulmo looking like some sort of creature you would most likely find in one of these stories sailors like(d) to tell, huge, green skin, fish tails, covered in kelp and sea grass, with a voice as terrific as the storm. Awesome.
Now this brings me to Aulë. Aulë who created the Dwarves in a way he imagined the children of Iluvatar to look like, presumably in his own image that could very well be as eldritch as everyone else's. They are his creation, all of his imagination went into them. If we assume that the Ainur had no idea what the elves were intended to look like this actually gives Aulë a lot of possibilities.
Who says that dwarves look even remotely human like? Probably some paragraph in the Hobbit or LotR I forgot about but shhh They could look totally non-human like. Maybe Aulë got inspired by moles digging through the ground and gave them an appearance that was more resembling of that.
We do know that they have some unique hair colours going in because Dwalin has a blue beard according to the Hobbit. Give me blue beard Dwalin, not gray blue but sky blue or like Indigo blue.
Just like... Dwarves have so much potential to be unique because they were created outside of Eru's plan and given how the Ents turned out we have a lot of freedom here. If we can make elves look eldritch and weird to the human eye, we can do the same thing with dwarves. They don't have to be short bearded versions of us, they can be something very different looking.
