There are four types of Muslims the Sunni, Shia, Kharijite and the Sufi.

The official religion of the Islamic Empires was some form of Islam, usually Sunni Islam, but there were several Shiite, Ibadi, and Kharijite Islamic Empires at various points of history. Of course, there were significant populations (in some cases, majorities) who were Non-Muslim, often Christian, Hindu, Jewish, Buddhist, Jain, and Sikh.

Imam Ali Ibn Abi Talib (AS) was 63 years old after being mortally wounded by a Kharijite while he was praying in the mosque at Kufa. He died 2 days later on the 21st of the month of Ramadan, 40 A.H.

Mughals were basically sunni- Muslims. They followed Islam religion and during the period of Akbar, they followed Din-I-Illahi and after his death Jahangir readopted Islam as the official religion of Mughals.