Mandaeism

Mandaeism is a very obscure religion/sect. Mandeans revere John The Baptist. The wikipedia also states that Mandeans revere other Prophets i.e., Adam, Abraham, Moses and Jesus [Need more evidence. I read a few articles that state the opposite to this]. 

We don't exactly know the origin of this sect. We are also not very sure if they are closer to the Jewish or the Christian faith. A number of people have claimed that Mandeans are Ahl al-Kitab (People of the Book) and they are mentioned together with its larger group (the Sabaens) in the following Quranic verses

[The Holy Quran 2:62] Surely those who believe, and those who are Jews, and the Christians, and the Sabians, whoever believes in Allah and the Last day and does good, they shall have their reward from their Lord, and there is no fear for them, nor shall they grieve.

[The Holy Quran 5:69] Those who believe (in the Qur'an), those who follow the Jewish (scriptures), and the Sabians and the Christians,- any who believe in Allah and the Last Day, and work righteousness,- on them shall be no fear, nor shall they grieve.

[The Holy Quran 22:17] Lo! those who believe (this revelation), and those who are Jews, and the Sabaeans and the Christians and the Magians and the idolaters - Lo! Allah will decide between them on the Day of Resurrection. Lo! Allah is Witness over all things.

Mandeans Statistics

• Locations: Reside primarily in Iraq, Iran and now in the west
• Est. population: less than 100,000(approx)
• Important literature: Ginza Rba and Qolusta 
• Written/Spoken: Arabic and Farsi
• Established (year):  Unknown
  
• Membership: Extremely secretive
• Symbols: Unknown