Originally Posted by
Eapoe
No, he's not. Those that are though, are Sylvanas Valkyr, which they can't do anymore (hence her questline in Stormheim), Helya (who actually can only give life back to the dead, not make undead), and Bolvar (the current LK) who I've already said won't do it.
The Deqth Knights of lore are those who were raised by the LK, and directly are only those who had ties with him (opposing or allied races) and therefore can't be races that come up in later parts of the overarcing story, such as VEs and NB.
If races like Tuskar, Oracles, Frenzyheart, and such up to LK ever become allied races, then they have a shot at being DKs.