My human hunter was able to get the Horde's version of the MoP starting quest back in MoP, just by flying into Orgrimmar and clicking the board. : r/wow
Deeper Into Darkness WoW Quest completionist guide
Why are MoP and WoD legendary Quests Disabled? : r/wow
Trimmed Completionist Cape
Achievement Guide and Roadmap - Ori and the Will of the Wisps - XboxAchievements.com