Sovereigns start out by taking the classroom taught non-controversial idea of self determination to its logical extreme (every individual a country unto themselves). They don't need a foundational document because they believe that not answering to anyone is the natural state and therefore needs no deceleration. They further conclude that unnatural states (re: being born into someone else's rule) must be the result of some form of scam or trick. It has appeal because on the surface it is logical and congruent with things you learn in school.

Sovereign's go from extreme libertarian to crackpot in their explanation of why the world doesn't match their description of the natural free state. They invent an elaborate story of paper people and corporations and conspiracies to act as a sort of dark matter that makes their theory match reality. Soverign's can have wildly different takes on the dark matter while still agreeing on the core ideology.

Soverign's are basically just magical thinkers who happen to be libertarian.