On one of the comments by Florian he described a religious order that venerates John
the Baptist and Noah. I mistook this for a garbled account of ther Yezidi as scholars are all over the place with descriptions. However, Florians descriptions match another smaller persecuted group called the Mandeans. They are more commonly known by their Islamic name Sabians. While they venerate John the Baptist they are not Christians.
This is yet another group I will have to devote some time and research on.
Like all other non Muslim groups they are highly persecuted and many have fled to Jordan and Syria.