Aww, thank you for your question!
In fact, the angel wings all have the same white, feathery, bird-like form. But when it comes to demons, the wings are all different, some more like birds, some more like bats, some even like insects.
Some demons are too vain to show their wings, if they don't fit the appearance they want to have. But it's more about personal taste than about society. (Okay, some demons can't fly, their wings just won't carry them; they are sometimes looked down upon.)
There is one demon (demonlord to be exact) whos wings are really pretty (in contrast to his behavior
), a bit like those of a dragonfly, colorful and iridescent. They make it possible for him to stand in the air; an ability other demons need additional power/ shadow magic for.
Oooh, it's a pity you don't like to talk about your story! From what I've read you've put a lot of thought and detail into your species and their society/ interactions with humans.
I don't want to force you to write more or drag the infos into the open, so I won't ask questions.
But I want to say at least a big Thank you! for sharing! 