Who were the various authors that wrote biographies about Gurus, as mentioned in this section?

Chapter 0 identifies several authors of Guru biographies. The famous 'Brihat Guru Charitra' was written by Saraswati Gangadhar. The 'Shri Sai Satcharita' was authored by the late devotee Shri Govind Raghunath, also called Annasaheb Dabholkar. Shri Dasganu Maharaj, a poet who had earned Shri Sai Baba's grace, wrote two shorter biographies. Furthermore, Shri Samarth Sadguru Tembhe Swami, or Vasudevanand Saraswati Maharaj, wrote a scholarly biography, though it is noted that since he was a Sadguru himself, his work is in a different category than those by devotees like Dabholkar.