I found this book about Shi’a Islam, by Sayyid Moustafa Al-Qazwini. One of the chapters I found Particularly interesting was the one titled “The Five Schools of Islamic Thought,” which briefly highlights the histories of the five major schools in Islam.

https://www.al-islam.org/inquiries-about-shia-islam-sayyid-moustafa-al-qazwini/five-schools-islamic-thought