कल्पान्तरे विश्वासटिप्पन्यः

Source: TW

Mahābhārata grouping of valid paths: Veda, Sāṅkhya, Yoga, Pāśupata & Pāñcarātra

Niśvāsamukha (an early Śaiva tantra text) grouping:

Laukika: Vratas, Dānas, Tīrthayātras
Vaidika: Śrautasmārtādi
Ādhyātmika: Sāṅkhyā, Yoga
Atimārga: Pāśupata, Lākuliśa
Mantramārga: Siddhānta +++

These groupings, excluding Nāstika paths, are signs of a Hindu identity. Shows who were the members of the “Tānūnaptra” covenant at different points in time.