So, I'm really interested in Feudal Cultivator social structure, and hope we get to see more of it in Wessex. Lemme float a few theories about how it works:
We know there are four categories of Cultivators in Feudal lands: Chivalric (Knights), Nobiliate (Nobles), Clerical (Priests, but likely also Monks and Nuns), and Errants (any Cultivator that isn't one of those other things). So bear that in mind going forward.
Now, we know that Chivalric and Nobiliate cultivation is hereditary in practice (whether that's inherent or just due to resources being pumped in), and that only men are Knights. But they do seem to marry other Cultivators and the daughters of Knights still seem likely to become cultivators, which means they're probably mostly Nobles. Which, demographically, likely means that there are a lot more female Nobles than male (because some percentage of men who would become Nobles otherwise become Knights). In terms of social position, I think male Nobles and Knights are fairly interchangeable with the exception that Knights are obviously much better in a fight, and Nobles are likely a bit better at administration and social stuff...maybe empowered by their Fief itself? That part is less clear. Female Nobles are likely mostly just someone's daughter or mother or wife, in terms of their social position, and are likely not taught to fight much if at all.
So then, Clerical Cultivation is not hereditary, but presumably involves oaths to the Church and joining it in a formal sense. Their powers may be tied to their physical Church or Monastery or something like that, though it's hard to say for sure. I suspect the social structure there is just, y'know, the church. Unlike in real history, their power means they likely are taught to fight and defend their flocks, though it's not their primary area.
And finally Errants. I suspect that Errants are flatly inferior to the other three branches, less powerful and impressive in general, and are what happens when a commoner manages to become an actual cultivator either on their own or due to being backed by a patron. They can probably 'graduate' to Clerical cultivation by joining the Church or Chivalric or Nobiliate Cultivation by being knighted or ennobled, but the latter seems likely to be rare. Since they're a catch-all, any more generalizations are gonna be hard.