I like the idea of Wu, mage of life, being responsible for Bugbears and Hobgoblins. There needs to be another though. So far we have three races of goblinoid; Bugbear, Goblin, and Hobgoblin. There needs to be a hidden fourth bred in secrecy deep underground... do you think Nilbogs would work?
The thing about Wu is that he prefers to use traditional breeding combined with magical serums to enhance the natural capabilities of beasts. In other words, he's responsible for dire animals. I actually have a different plan for chimeric animals like owlbears.
Magus Wu, mage of life. He breeds dire animals and races of super soldiers and he is a master of unarmed combat.
Magus Aare, mage of death. He strives to create more efficient undead. Some say that his "hospitals" can produce a thousand zombies a day.
Magus Raux, mage of the inorganic. He creates diabolical machinery and experiments with grafting his devices into living and undead test subjects. He is rarely seen, but some say that he has transformed himself into one of his own artifacts.
I've never heard of Orogs, or whatever they are called. Can you tell me what book they are from?
Ditto. Except, I homebrewed that all goblinods are shadow fey and have given them powers associated with shadow-walking, cursing, and trap-making.The version I've seen and gone with is to have goblins, hobgoblins and bugbears be the unseelie counterparts to elves and gnomes, born of the fey realms, but so long ago transplanted into the material world that they've lost their fey type and become humanoids (again, like the gnomes and elves).
“Seelie” and “Unseelie” exist in all courts, used by mortals attempting to differentiate between fey who are on good terms with humans and those who are on bad terms; these terms don’t equate with “good” and “evil” as fey are inherently amoral beings. For example, a Seelie fey can be haughty, vindictive, and mischievous while an Unseelie fey can return a favor, request aid from humans, and keep its word of honor.
However, Shadow Fey are a group of Unseelie wholly opposed to humanity, some say spawned from nightmare, having sworn themselves in service to wicked masters in the Feydark, especially the fomorian kings. These include bogeymen, bugbears, goblins, hobgoblins, ogres, orcs (redcaps), spriggans, and trolls.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.