Looking forward to more Nightcrawlers! If I might make a humble request, would you please consider adding a Mummy? That’d help tick off the last few Universal Monsters, along with Invisible Man, I suppose. :)
To me, the Revenant is kind of the preserved dead to fit the Mummy - you'll see hints of that in their trinkets and flavor text. The Ghoul is more of the zombie type of undead