Besides the major works by Dabholkar and Gangadhar, what other Guru biographies are mentioned in the text, and why are they considered different?

In addition to the two famous Guru biographies, the preface mentions other, less prominent works. As detailed in Chapter 0, one such biography was written by Shri Samarth Sadguru Tembhe Swami, also known as Vasudevanand Saraswati Maharaj. This work is described as detailed and scholarly but had not achieved the same fame as the Guru Charitra. Crucially, it is categorized differently because the Maharaj wrote it himself, unlike the biographies by devotees Shri Saraswati Gangadhar and Annasaheb Dabholkar. Another biography, written by Shri Samarth Sadguru Dattatreya Maharaj of Balekundri, is also mentioned, but the text notes that it did not seem to have been printed or published at the time.