The authors of Tawarikh, specifically related to the Delhi Sultans, are varied and diverse. These historical accounts were written by different individuals during the Sultanate period in India. Some of the notable authors include:

1. Ziauddin Barani: Ziauddin Barani was a 14th-century historian who served in the court of Sultan Muhammad bin Tughlaq. He is known for his work "Tarikh-i-Firuz Shahi," which provides a detailed account of the reigns of the Tughlaq dynasty.

2. Minhaj-i-Siraj: Minhaj-i-Siraj was a Persian historian who wrote the "Tabaqat-i-Nasiri" during the 13th century. This work covers the reign of Sultan Iltutmish and provides valuable insights into the political, social, and cultural aspects of the Delhi Sultanate.

3. Isami: Isami was a historian and poet who composed the "Futuh-us-Salatin" in the 14th century. This work focuses on the early Delhi Sultans, starting from Qutb-ud-din Aibak and continuing up to the reign of Ala-ud-din Khilji.

4. Ibn Battuta: While not primarily a historian, Ibn Battuta's travelogues provide significant information about the Delhi Sultanate. He visited India during the 14th century and wrote about his experiences in works such as "Rihla" or "The Travels."

5. Amir Khusrau: Amir Khusrau was a renowned poet, musician, and historian who lived during the 13th and 14th centuries. He wrote several works, including "Khazain-ul-Futuh," which chronicles the reign of Sultan Alauddin Khilji.

6. Shams-i-Siraj Afif: Shams-i-Siraj Afif was a 13th-century historian who wrote the "Tarikh-i-Firoz Shahi." This work provides valuable information about the reign of Sultan Firoz Shah Tughlaq.

7. Ibn Batuta: A famous traveler and writer, Ibn Batuta visited Delhi during the reign of Muhammad bin Tughlaq and left behind valuable accounts of his experiences and observations.

These authors, among others, have contributed to our understanding of the Delhi Sultanate through their historical accounts. Their works provide crucial insights into the political, cultural, and social aspects of the Delhi Sultanate, helping us comprehend this significant period in Indian history.