General reference literature on the Martinist Order documents Initiate's position as the middle degree of Papus's, that is Gerard Encausse's, original late nineteenth century founding sequence, a structural fact as publicly available as the order's broader lineage from Louis Claude de Saint Martin's eighteenth century theurgical Christian mysticism.
The pattern of later Martinist bodies expanding the founding three degree structure with additional grades is itself documented in general accounts of French esoteric organizational history, part of a broader pattern of institutional splintering that affected several societies descending from the same period of French esoteric organizing.
As with Associate and Superior Unknown, what is publicly documented about Initiate is its structural position and lineage, not any specific ceremonial content the order's various branches transmit only to their own members.
General accounts of the order's later twentieth century history note that the three founding degrees survived intact across most of the order's various successor bodies even as those bodies otherwise diverged, a documented point of continuity across an institutionally fragmented tradition.