folk

blended family, nuclear family

extended family, household, kith

brood

descendant (also descendent), issue, offspring, progeny, scion, seed

clansman, kinsman, kinswoman, relative

dynasty

bracket, echelon, grade, layer, level, tier

place, position, rank, standing, status

food chain, grouping, hierarchy, stratification

clan, family, fraternity, people, race, tribe

subcaste

community, society

crowd, masses, mob, populace, proletariat, rabble, rabblement, riffraff