Found this post on twt (X??), and it says some interesting things about gego, so I'm gonna talk about it:
yes, geto has a specific personal style, while gojo is only seen wearing the most basic stuff (when not in uniform, which is also not customised). I feel like it says a lot about gojo's life pre jujutsu high.
as we know gojo is the heir of THE rich and exclusive gojo clan, and was taken care of by servants (as seen in the manga and anime scene where toji meets him as a child) and i believe that a person of interest like him didn't receive normal education and wasn't allowed to participate in normal childlike activities, until he was a teenager in jujutsu high. so it's obvious that he didn't have many role models and inspirations to look at as he grew. children model after the adults in their lives until they go to preschool and school where they then take inspiration from their friends— neither of which gojo had access to. also his clothes were probably picked out for him by other people for the longest time.
Then he is thrust into the world of jujutsu high and meets suguru, who he sincerely believes is his other half. he is inspired by suguru and shows that by customizing his uniform according to suguru's. this is his way of getting influenced by suguru.
Maybe im looking too much into it, idk man
But what i'm trying to say is, gojo didn't have the opportunity to develop a personal style well into his teenage years where he just starts with what's comfy/basic enough and kinda...sticks to it well into his adulthood. the only time he was inspired by a friend in his personal style was suguru, because of course he was.
