This is a style model based on artist as determined by BLIP captioning.
This is a separation of BLIP caption style from the "Style Catalogue". The Style Catalogue will focus on CLIP based captioning. Artist of SDXL will focus on Deepbooru/BLIP captioning. BLIP labels images based on artist, focus, art style and school. Variations , but basically the style is broken into 4 categories.
These models will focus on artist and art style. BLIP associates all images with an artist, allowing a more focused style model.