Also there is definitely something about the spectrum of obedient - obstructive as a personality trait.
Which explains how two children brought up in the same household with the same fabulous parenting (oh! I did boundaries from an early age dontcha know and am reaping the rewards now etc) can have one child that is permanently testing the boundaries - trying to be rude etc and one that is compliant, polite, unquestioning.
I have one of each, with the elder being the challenging one. I remember wrangling with him at baby groups and feeling like a failure as a mother surrounded by Stepford wives with their Perfect Penelopes who shared nicely and sat still. But then how I laughed a few years later when I had my own Perfect Penelope and they were wrangling their younger Horrid Henrys.
Mine are grown up now and guess what? The challenging one is challenging. He’s polite, respectful, sociable, bright and also unpredictable, questions and challenges, likes to find shortcuts. The more compliant one is quieter, polite, respectful, sociable, hardworking, accepts the status quo more and likes processes/rules.