I steal personality traits & mannerisms

I have very thorough analysis of individuals who I admire, could be a real person or a character from a film. I will often rewatch a film for multiple periods solely to study every single nuance of that specific character. Clips are often put in file, written with a very detailed analysis of the fundamentals of what makes them, them. Down to their body language, the use of direct or indirect eye contact, their predominant emotional cadence, speech patterns, pause duration when speaking, this list goes on. I feel like people may do this unwittingly but never to this degree? It’s never a person I actually know. Doing this especially when hyper analyzing very captivating characters, you really began to understand why we are drawn to people who act this way and the mental process of that individual, you can really unlock unspoken things, which i then gradually adopt into myself, eventually it become subconscious. We don't pop out the womb knowing who we are, instead we adopt trait that resonate with us until they become a integral part of us. I believe embracing that we are all identity thief's and that "being authentic" is bullshit is when you began to truly become the person you want to be. But maybe i just have personality disorder haha who knows.