Delterius
Arcane
If I made a game or class based around Necromancy I wouldn't necessarily focus on masses of zombies or skeletons. Archetypical, sure, but those are nameless and kinda boring. Interesting enough for a war game but not an RPG, IMO. Better to focus on single undead at a time and the history behind them. A Wraith could be bound by the gruesome torture and murder of an innocent child. A Skeleton built from the hallowed bones of a dozen priests, martyrs who died inside a church during war. Ghouls could be expressions of recent deaths by famine. And so on.