Well, I know one (sorta, it's a long story) so I mean, WTNV kinda did a spot on job describing how they look. They look different from person to person. I would think they look like tall nonbinary people spotted white and black and brown, with a pair of large wings, a pair of small wings covering their faces (I think they wouldn't have hair, depending on the angel, I guess just faces all over their head?) and yeah, basically really abstract because they don't need no human acceptation for what they look like lol