There are several offshoots of Ismailis...
There are several offshoots of Ismailis; the most popular ones among them are the Aga Khanis, the Dawoodi Bohras, and the Druze. The Druze After the Fatimid Empire was established in 909 AD by Ubaydallah al- Mahdi Billah, he claimed the Ismaili Imamate. The sixth caliph of the Fatimid Empire, al-Hakim bi-Amrillah, ascended the throne when he was only eleven years old and was feared for his eccentricity and insanity.
The Fatimid Empire was known for its religious tolerance, but under the reign of al-Hakim, a lot of persecution was seen. In 1021 AD (441 AH), al-Hakim had gone on his mule but never returned and only his mule returned and it was soaked in blood. This led to the birth of the sect of the Druze, who did not accept the successor of al-Hakim and believed that al-Hakim was an incarnation of God and was the Mahdi, who would one day return and bring justice to the world.
The Nizaris The second but major split among the Ismailis occurred following the death of the Fatimid Caliph, al-Mustansir Billah in 487 AH (1094 AD). After he passed away, the older son Nizar and the younger son fought for the empire. Nizar was defeated and was jailed. His son, however, escaped. A group of people started believing him to be the Imam, and the Imamate of the Nizaris continues to their present, Imam Aga Khan IV.
The term Ismailis is referred to the Nizari community, who are followers of the Aga Khan and they are the largest group among the Ismailis. The Agha Khanis or the Nizaris consider Imam Ali (as) as the first Imam and Imam Husayn (as) as the second Imam and do not consider Imam Hasan (as) as an Imam.[^9] The Mustalis Al-Mustali was the younger son of al-Mustansir Billah, whom he succeeded in defeating Nizar.
The followers of the Mustali line are also known as Taiyyebi, named after their 21st Imam, Imam al-Taiyyeb who they believe has gone into hiding. The Taiyyebi’s further split into different sects, such as Dawoodi Bohras, Sulaymani Bohras, Alavi Bohras and Hebtiah Bohras etc...