Commentaries on tantras of the highest class, divided into “non-dual,” “wisdom,” and “skillful means” tantras (Toh 1180-2500).
Commentaries and liturgical works related to the tantras of Hevajra and Kālacakra (Toh 1180-1400)
Commentaries and liturgical works related to mother or yoginī tantras centered on Śaṃvara / Cakrasaṃvara and Vajravārāhī or Vajrayoginī (Toh 1401-1606)
Commentaries and liturgical works related to the Catuḥpīṭha, Mahāmāyā, Vajrāmṛta, Buddhakapāla, Buddhasamayoga, and Tāra mother or yoginī tantras, to mother tantra in general, Avalokiteśvara, Mahākāla amd Acala (Toh 1607-1783)
Commentaries and liturgical works related to father tantras centered on Guhyasamaja (Toh 1784-1917)
Commentaries and liturgical works related to father tantras centered on Yamāri, Vajrabhairava, Mañjuśrīnāmasaṃgīti, Ekajaṭa, and Vajrapāṇi (Toh 1918-2216)
Commentaries on the Unexcelled Yoga tantras in general (Toh 2217-2500)