Note, the original artist whose style Stable Diffusion was supposedly copying (Greg someone, a "concept art matte painting" artist) was in fact never in the tra

Note, the original artist whose style Stable Diffusion was supposedly copying (Greg someone, a "concept art matte painting" artist) was in fact never in the training data. Style is in the eye of the beholder and it seems that the text encoder just interpreted his name closely enough for it to seemingly work.