Who are the Kaka'is living in Iraqi Kurdistan who speak Kurdish? Are they remnants of Zoroastrianism or an extension of the Alawites in Turkey?

The Kaka'i are a deviant sect from Islam that emerged as a Sufi order in northern Iraq. They live by agriculture, do not reveal their hidden beliefs, and have shrines they venerate, such as the shrine of Sultan Sahak and Sayyid Ibrahim. They believe that Ali reincarnated in the soul of the order's founder, and they advocate for the unity of existence and transmigration of souls. They do not accept the Qur'an and believe in the Last Day as the appearance of God in person. Among their books are "Khutbat al-Bayan" and "Jawidan Urfi." They teach their deceased superstitions to ward off angels, and their beliefs revolve around innovations and superstitions.