Besides the 'Guru Charitra' and 'Shri Sai Satcharita', what other Guru biographies are mentioned, and why are they considered distinct or less prominent?

Chapter 0 of the preface mentions two other Guru biographies after establishing the prominence of the 'Guru Charitra' and 'Shri Sai Satcharita'. One is a detailed and scholarly work written by Shri Samarth Sadguru Tembhe Swami, also known as Vasudevanand Saraswati Maharaj. This work is considered distinct because it was written by the Guru himself, placing it in a different category from biographies written by devotees. It also had not achieved the same fame as the 'Guru Charitra'. Another biography, about Shri Samarth Sadguru Dattatreya Maharaj of Balekundri, is mentioned, but the text notes it did not appear to have been printed or published.