If I may, I would rather replace human "nature" by conditioning constructs, coping mechanisms, an mental patterns.

I deeply believe all humans share in the very beginning of their soul journeys the same core character traits fueled by the Universal principles/Natural laws giving birth to humble servant leaders full of passion, gratitude, empathy, courage, who walk their talk and model integrity in every single choice no matter how tiny it is, who know their intrinsic worth; thus, have no need to prove anything or compete.

They rather collaborate and empower others, who can be content, peaceful, and fulfilled by giving back and caring about what goes beyond themselves.

My belief is that what makes our uniqueness is not the character (transformed into personality whenever conditioning starts taking place especially in the presence of a genetic predisposition).

I like to think it is the set of innate or aquired talents through our continuous thirst for leaning and contributing to a little better world than what we found!