Honestly, it would have been too convenient if it turned out they were humans... besides, the spy brought them there. I doubt she would have willingly taken them to a town with Waldecian humans in it.
Edit: and I am the only one concerned that they are going to have the feelz ending by saying that it turns out there are no more Waldecian humans other than Licorice, and that was the secret the humanoid models have been guarding?