As I discuss in this answer, Sahajiyas refer to a secretive sect of Vaishnavas based in Bengal, which indulge in Advaitic Vamachara practices. Just like Gaudiya Vaishnavas, they trace their lineage back to the Chaitanya Mahaprabhu and subscribe to a Radha-Krishna centric theology.
This is how Satyanarayan Das Babaji of the Jiva Institute describes them:
There was a Buddhist sect called Sahajayāna, besides the Mahāyāna and Hīnayāna sects, which was popular in the Eastern part of India before the appearance of Mahāprabhu. They followed the Tantric practice of trying to elevate their consciousness or raise the Kundalini with the help of a female partner. The purpose was not to enjoy sex as is misunderstood by many. Some sects of Tantra still practice this and it has unfortunately become the popular understanding of the Tantra practiced in the West.
When Mahāprabhu became popular in Bengal and Orissa, many of these Sahajayānis took to Gauḍīya Vaiṣṇavism being influenced by Mahāprabhu. They subsequently mixed their Sahajayāna practice into the philosophy of Mahāprabhu. They believed that Goloka Vṛndāvana exists in the physical body and love of Kṛṣṇa is dormant within the ātmā. This love can be manifested in the most natural way (sahaja) in the association of a female, especially a woman who is not one’s wife (parakīya) as the male mind is naturally attracted to women other than one’s wife.
Sahajiyās consider Caitanya-caritāmṛta as one of the most important books of their school and claim that even Caitanya Mahāprabhu had a female partner. According to them, the daughter of Sārvabhauma Bhattācārya, Ṣāṭhī, was Mahāprabhu’s partner. This was the reason behind Ṣāṭhī’s husband, Amogha, being upset with Mahāprabhu when He came to Sārvabhauma Bhattācārya’s house to take lunch prasād. (CC Mad 15.245-248)
Similarly, in their books the sahajiyās give the names of the female partners of all the Gosvāmīs of Vrindavan. They consider this knowledge to be very esoteric. Therefore most of their literature has never been printed. I have a collection of such manuscripts in my personal library.
What I'm interested is the part in bold. Sahajiyas believe Chaitanya Mahaprabhu indulged in Vamachara practices with the daughter of Sarvabhouma Bhattacharya, Sathi. They also seem to believe that the Goswamis of Vrindavana (Rupa, Sanatana, Jiva, Raghunatha Bhatta, Gopala Bhatta and Raghunatha Dasa) indulged in similar practices with their respective female partners.
My question is, what are the names of these female partners and who were they exactly?