At the root, at the core, each person is unique.
On top, however, it is superficially covered with a cultural code… like a set of clothes, a garment, it reflects many of the movements and character of the individual, the garment is most often what is given, but sometimes it is what the individual chooses.
A complex mixture of cultural codes is possible. Rotten elements might be present within, as well as magical mutations. It’s akin to the DNA but in the information world of humans.
The erasure or correction of a code in its entirety or nuance is possible too. The code applies to societies, the groups that carry the code.
It is all information and pieces of reflected, partly post factum mutated reality.