And  according to those authors, the rest of the hypothalamic nuclei fall into the Posterior Group as follows:

Premammillary Nuclei  PMN
 Medial Mammillary Nuclei  MMN
 Lateral Mammillary Nucleus LM
Supramammillary Decussation sumx
Supramammillary Nucleus SuM
Mammillary Peduncle mp
Post-Mammillary (Magnocellular )Nucleus PCMC
Caudal Magnocellular Nucleus of the HypothalamuCMH
Tuberomammillary Nucleus...TUM

But that makes matters  rather lopsided