आगमे शैवे विश्वासटिप्पन्यः

Source: TW

What is today mahArAShTra state was once a great locus of the practice of the pashchimAmnAya: two decades ago a handful would have known that and recognized its vestiges when they saw them. In what is tamiL nADu, trika was once prevalent; today some people think it is something that was practiced in Kashmir.

Diversity

It may encompass a lot of distinct praxis and philosophy but that doesn’t make it unviable or meaningless. In fact explicitly shaiva exegetes recognize the unity of their shaiva-shAstra though they might privilege different tantra-s was being the primary scriptural source.

Nepal

TMK shrIkula practitioner in Nepal have multiple distinc lineages. There is a Nepal connection, but there are other famous lineages, like one from the drAviDa country like the descendants of samarapu~Ngava dIkShita, and one related to haMsa miTThu from Gujarat.