When I worked in animation, I could tell who on the team modelled a character based on the subtle details that were reminiscent of that person. You could tell who animated a shot by the subtle details of how a character moved and acted.
Art is a reflection of self. Even art for hire or objective reproductions. Even photographs. There’s a bit of us in everything we do, whether that’s personality, mannerisms, world views or personal history.
For the coders here, you must have hit code bases where you see a function and know who on your team wrote it. It’s the same thing.