Sri Vidya is a Shakta sect which believes that the goddess Lalita Tripurasundari is supreme. Now one of the most important texts of the Sri Vidya sect is the Lalita Sahasranamam, found in the Lalita Mahatmya of the Brahmanda Purana, so the 18th century Sri Vidya philosopher Bhaskararaya wrote a commentary on it. In this excerpt of his commentary, Bhaskararaya discusses a verse in the Lalita Mahatmya which says that Lalita Tripurasundari was worshipped by gods, humans and Siddhas:
"87. There were also a multitude of Devas, a multitude of men, and a multitude of Siddhas ; and Devi Lalità allowed herself to be seen by them all."
"A multitude of Devas (Divyaugha)" the holy Brahmarşis, Visvāmitra, etc. The Siddhas are Sanaka, Narada and other Yogins. The Rudrayamala, says, “Devi was attended by many crores of rulers of Quarters, by many crores of Moons, Suns and Vasus, by many crores of Yogins such as Sanaka, and by many Saptarisis and by many Naradas." Or, the word "Ogha" (multitude) of Devas, men, and Siddhas, may mean the different assemblies of Gurus. For there are seven Gurus of Gurus (Parama-Gurus) headed by Paraprakasanandanatha, eight Parapara-Gurus headed by Gaganānandanatha, and four Apara-Gurus headed by Bhoganandanatha. These three assemblies of Gurus are indicated by the words "Devas", "men", and "Siddhas" respectively. The above explanation follows the view of the followers of Kamaraja, but according to the School of Lopā nedrã, and according to the divisions of Viclydis, as described in the Jnanarnava etc., there are many groups of Gurus headed respectively by Misranandanātha, and others. The gradations among the Gurus can only be learned through the instructions of a Guru.
My question is, who are the Paramagurus, Parapara Gurus, and Aparagurus referred to by Bhaskararaya? Their names are listed in full in chapter 3 of of the Nityotsava, a work by Bhaskaraya's shishya Umanandanatha, as described in this web page:
A large section on the different gurus in the Shri Vidya tradition follows this section, and, as in the Ganapati section of Nityotsava, these are divided into celestial, siddha and mortal gurus, both for the vidya (mantra) that begins with Ka (Kadi) and for that which begins with Ha (Hadi).
The celestial gurus in the Kadi group are listed as Paraprakashandanatha, Parashivanandanatha, Parashaktyamba, Kauleshvaranandanatha, Shukladevyamba, Kuleshvaranandanatha and Kameshvaryamba. The siddha aughas are Bhoganandanatha, Chinnanandanatha, Samayanandanatha and Sahajanandanatha. The manava augha consists of Gaganandanatha, Vishvananandanatha, Vimalanandanatha, Madanandanatha, Bhuvananandanatha, Lilanandanatha, Svatmanandanatha and Priyanandanatha. At the close of this lengthy section, mantras are given for other, unknown gurus.
But who are these figures? Presumably they must be ancient, since Bhaskararaya thinks the Brahmanda Purana is referring to them. Are they referred to in Hindu scripture, or in the works of earlier Sri Vidya philosophers, or what? Does anyone know their stories or when they lived?