Islamic schools and branches
There are three traditional types of schools in Islam: schools of jurisprudence, Sufi orders and schools of theology. Other types of Islamic denominations and movements have arisen in the modern era.
The original difference between Sunnis and Shias is over who the true first successor to Muhammad is. Shias believe Ali ibn Abi Talib is the true successor to Muhammad, while Sunnis consider Abu Bakr to hold that position. The Khawarij broke away from both the Shias and Sunnis during the First Fitna (the first Islamic Civil War) and subsequently opposed both the Shias and the Sunnis, often violently.
In addition, there are several differences within Sunni Islam and Shia Islam. Sunni Islam is separated into four main schools of jurisprudence, namely, Hanafi, Maliki, Shafi'i, Hanbali. These schools are named after Abu Hanifa, Malik ibn Anas, al-Shafi'i, and Ahmad ibn Hanbal, respectively.
Shia Islam, on the other hand, is separated into three major sects: Twelvers, Ismailis, and Zaydis. The vast majority of Shias are Twelvers (a 2012 estimate puts the figure as 94% of Shias being Twelvers)[2] to the extent that the term "Shia" frequently refers to Twelvers by default. All mainstream Twelver Shia Muslims follow the same school of thought, the Jafari school of thought (named after Jafar as-Sadiq,[1] the sixth Shia Imam). All four founders of the Sunni schools of thought gained knowledge, either directly or indirectly, through Jafar as-Sadiq.[citation needed]
Zaydis, also known as Fivers, follow the Zayidi school of thought (named after Zayd ibn Ali). Isma'ilism is another offshoot of Shia Islam that later split into Nizari Ismaili and Musta’li Ismaili, and then Mustaali was divided into Hafizi and Taiyabi Ismailis. Tayyibi Ismailis, also known as "Bohras", are split between Da'udi Bohras, Sulaymani Bohras, and Alavi Bohras.
Similarly, Kharijites were initially divided into five major branches: Sufris, Azariqa, Najdat, Adjarites and Ibadis. Of these, Ibadis are the only surviving branch of Kharijites.
In addition to the aforementioned groups, new schools of thought and movements like Quranist Muslims, and African American Muslims later emerged independently.