Shia
shia which is the sect of the majority in Iran
The Sunnis belong to Islam and Shiites are a false sect who claim to be part of Islam.
I believe that the majority of Iranians are Shi'a Muslims.
Nation of Islam
This sect of Islam is known as Shi'a Islam, who believe the rightfully chosen followers of Muhammad were the 12 imams, who were from the family of Muhammad.
They are Muslims. It is irrelevant to think about which sect they belong to. No sects in Islam with same meaning as in Christianity. The sects in Islam are more or less different schools or different groups that differ only on minor historical issues.
Sufism is a branch of the Sunni sect of Islam. Sunni's are the most popular sect.
Sunni
Of Islam.
No
Sunni sect is the largest sect of Islam. Shia are in very less number. Sufi is not a sect. It is a way of life for some of the Muslims who seek pleasure of Almighty Allah by excessive prayer and devotion.
sadducess