9. Yazidism (Historic Reach)
Yazidism once claimed millions of adherents across the Middle East, with possible connections to ancient Mesopotamian religions. This unique faith blends elements from several ancient traditions and centers around the worship of Melek Taus, the Peacock Angel. Today, Yazidism endures in small, resilient communities in Iraq and Syria, striving to maintain their rich heritage. Encyclopedia Britannica on Yazidism
