I genuinely have no idea what BG looks like, and unless LE have better quality video they don't either, we have an idea of what BG wore, but even his size is complicated as he wore so many layers it is hard to guesstimate what size he is,
and they have no good witnesses IMO as they do not talk about what he was wearing unless they reference the video, if they had good witnesses they could say exactly what was on his head (if anything) whether he had his face covered, and they would be able to have asked back in 2017 if anybody knew somebody who had this hat and this scarf and a jacket like this for example
all they can do it seems is point to the BG and say look at what he is wearing, and I have seen wild examples that people see in the video and what he was wearing, and diagnosing the exact medical condition he has which makes him walk a certain way
I see mostly blur and a blue jacket and jeans,