Fatimids
In the Fatimid (and subsequently Ismaili) tradition, the Imamate was held by:
8. Aḥmad al-Wafī (born ʿAbd Allāh ibn Muḥammad ibn Ismāʿīl (al-Wafī)), (Died 829), 1st Da'i of the Ismāʿīlī mission, according to Ismāʿīlī tradition, son of Muḥammad ibn Ismāʿīl
9. Muḥammad at-Tāqī (born Aḥmad ibn ʿAbd Allāh ibn Muḥammad (at-Tāqī)), (Died-840), son of ʿAbd Allāh ibn Muḥammad, 2nd Da'i of the Ismāʿīlī mission, according to Ismāʿīlī tradition;
10. ʿAbd Allāh ar-Raḍī/al-Zakī (born al-Ḥusayn ibn Aḥmad ibn ʿAbd Allāh (ar-Raḍī)), (Died-909), son of Aḥmad ibn ʿAbd Allāh, 3rd Da'i of the Ismāʿīlī mission, according to Ismāʿīlī tradition;
11. Ubayd Allah al-Mahdi Billah, son of al-Ḥusayn ibn Aḥmad, 4th Da'i of the Ismāʿīlī mission, openly announced himself as Imām, 1st Fatimid Caliph, died 934
12. Muhammad al-Qaim Bi-Amrillah, leader of the Ismailis, openly announced himself as Imam, 2nd Fatimid Caliph, died 946
13. Ismail al-Mansur, 3rd Fatimid Caliph, died 953
14. Maʿād al-Muʿizz li-Dīnillāh, 4th Fatimid Caliph, died 975
15. Abū Manṣūr Nizār al-ʿAzīz billāh, 5th Fatimid Caliph, died 996
16. Al-Ḥakīm bi-Amrillāh, 6th Fatimid Caliph, disappeared 1021.
- The Druze believe in the divinity of all Imams and split off after Hakim's disappearance, believed by them to be the occultation of the Mahdi.
17. ʿAlī az-Zāhir li-Iʿzāz Dīnillāh, son of al-Hakim, 7th Fatimid Caliph, died 1036.
18. Abū Tamīm Ma'add al-Mustanṣir bi-llāh, son of Ali az-Zahir, 8th Fatimid Caliph, died 1094.
After his death, the succession was disputed. The regent Malik al-Afdal placed Mustansir's younger son Al-Musta'li on the throne. This was contested by the elder son an-Nizar, who however was defeated and died in prison. This dispute resulted in the split into two branchea, lasting to this day, the Nizari and the Mustaʿlī.
Read more about this topic: List Of Ismaili Imams