" nonconformer "

 [ "nonconformity" ]

1: refusal to conform to an established creed, rule, or practice.

  * e.g.,  ... My parents believe in nonconformity; my brothers and I have no curfew. 

 [ "Neurotypical nonconforming" ]

1: Neurotypical nonconformity is social behavior that does not match the norms typically expected in neurotypical communities. The term is usually used by non-autistic people who show some or many of the traits of, and prefer to socialise with, autistic or other neurodivergent people.

  * e.g.,  ... Sam isn't autistic but is neurotypical nonconforming and prefers to hang out with autistic people. 

 [ "Age-Nonconforming" ]

1: Not adhering to traditional or cultural expectations of their age. An adult who is age-nonconforming may enjoy children's media, dolls, or participating in childish activities. A child who is age-nonconforming may like more mature media or dislike children's media or participate in mature activities. Age-nonconforming may also take the formal of childish or mature attire.

  * e.g.,  ... I may be an adult but I like kids' shows and acting childishly. I am age-nonconforming.