The so-called cliques are too large; there's actually dozens, scores, of them on Skins's island, and they're usually exclusive enough that they have only six or half a dozen members.
Only the now-gone poor stupid Beth had enough "drawing power" among the primitives to amass a following as large as either one of these. And she's, well.....gone.
And it's probably unfair to include CaliforniaPeggy in a clique; she's pretty much singular.