None of the map 2 vampires belong to any vampire clan, despite having scripts associated with the Vanilla clans. This is true for all NPCs with the scripts T_ScNpc_Mw_Map2VampAundae, T_ScNpc_Mw_Map2VampBerne, T_ScNpc_Mw_Map2VampQuarra, TR_m2_Norem_Inte_Vamp1_sc, TR_m2_Norem_Inte_Vamp2_sc, or TR_m2_Norem_Sanc_Vamp_sc attached to them. For some of them, there could of course be a reason for it, but it looks like an oversight to me. There could of course be a reason for it, but this is inconsistent with Vanilla and the TR-specific clans.

The same goes for the vampires involved in the Ranyon-Ruhn Temple questline (NPCs with IDs TR_m1_V_xxxxx), but here I think the reason could be that this is an isolated cell and they thus should not be members of the clan (Quarra in this case).