People can argue about “varying ethnicities” in Essos or 1/8 descent or whatever, but the fact remains that Jeyne (and her mother) are considered to be poc IN THE TEXT ITSELF. Their lived reality, as it were, is as poc. So.
BASICALLY THIS. The lived reality of Jeyne and her mother is that of a POC; Jeyne gets discriminated against because of her blood, Sybell constantly fights for to be taken seriously as a player in the game of thrones (from what little we saw of her) and it’s still NOT ENOUGH, they still deride her, and it’s not over her being a woman (like Margaery and Cersei), it’s over where she comes from. I know that is not a class thing–it’s their blood that’s the problem, not class (Davos experiences classism and it’s just not the same? The issue of blood never comes up as a reason why people discriminate against lowborn and lower classes, except in the case of bastards–and both Spicer and Westerling are noble houses). So yeah, you can argue various ethnicities and 1/8 descent, but their heritage and the experiences they go through over it speaks to me as something that happens to PoCs.