Looks like last PTR update added some Warlock NPC’s:
Jaxos Widdowson & Lorraine Darktide: Jaxos appears to use a very Drust-esque clothing style, while Lorraine uses the style of a Kul Tiran Tidesage, making her perhaps, a redeemed follower of Lord Stormsong and his K’thir?
Lai de Emberscroll: appears to be the Huojin Warlock & Haoqi the curious is a blind, Tuishi Pandaren Warlock trainer! Meanwhile Skodi & Awakaya appear to be the Zandalari Warlocks of prominence, with a very Zandalari clothing style!
Grimroz Darkwhisper appears to be the AU Shadowmoon Clan Warlock, and he stands apart from the rest!
Se’tah Bloodtotem confirms te be a remnant of the Bloodtotem Tribe, and her existence also confirms they are still around AND a part of the Horde! And Tihkan Soultotem is a Tauren Warlock who takes seat in Magatha Grimtotems’ old tent, he also wears Grimtotem warpaint, strongly implicating he is, in fact, a Grimtotem himself!
Soulspeaker Niir is a Broken Draenei Warlock trainer! Kinda cool they use a Broken for this! Funny side notice is that his Alt-Draenor counterpart is Shadowspeaker Niir!