Necrolyte clan

Early orcish discourse on the makeup of the Orcish Horde of the First War mentions a Necrolyte clan in reference to the necrolyte unit/class.

Speculation
This may be a euphemism for a more formally named clan, such as the Shadowmoon clan, who might have included necrolytes in its ranks. Perhaps it merely refers to the necrolyte class as a group, not unique to any clan. It is even possible that there was in fact an early clan in the Horde called the Necrolyte clan. This possibility is what is implied by Warcraft: Orcs & Humans, but later sources contradict this. If so, this clan may have later evolved into the Shadow Council, the Stormreaver clan, or a similar group loyal to Gul'dan. In Warcraft II: Tides of Darkness, the necrolytes are a subgroup within the "Warlock clans".