The concept of the qelippot is a genuine part of classical Kabbalah, but the tidy scheme of ten named "shadow sephiroth", each with an assigned ruling demon, is largely a later construction. It was elaborated by Christian Kabbalists, given systematic form in the ceremonial magic of the Hermetic Order of the Golden Dawn, and developed further in twentieth and twenty-first century "Left-Hand Path" and Thelemic writing. The demons named as rulers, such as Beelzebub for Ghagiel, are drawn from earlier Jewish, Christian and grimoire demonology and mapped onto the scheme after the fact.
Luria's own kelippot, as set out in Hayyim Vital's Etz Chaim, number four rather than ten: three described as "completely impure" and a fourth, kelippat nogah, a translucent or glowing shell understood as a mixture of good and evil rather than pure evil, through which the ordinary permitted things of the world are said to pass. A one-to-one shell for every sephirah, with Ghagiel as Chokmah's specific opposite, does not appear in that Lurianic material in this form; it is the later systematizers, working chiefly from S. L. MacGregor Mathers's unpublished paper on the Qlippoth, who built the fully sephirothic ten-fold tree the modern list now presents. The system is presented here as a documented strand of esoteric thought, described in historical terms; the demons are not asserted to be real, and nothing here is offered as instruction or as the teaching of any single religion.
Sources Major Trends in Jewish MysticismGershom Scholem with The Golden Dawn: The Original Account of the Teachings, Rites, and Ceremonies of the Hermetic Order of the Golden Dawn, 6th editionIsrael Regardie, Physician of the Soul, Healer of the Cosmos: Isaac Luria and His Kabbalistic FellowshipLawrence Fine