Illustrious
Illustrious XL: an anime-focused line of models trained further from SDXL, and the base of NoobAI and many fine-tunes.
What it is
Illustrious XL was trained from SDXL on a large set of tagged illustrations. It knows many characters and art styles by their tags. NoobAI-XL and a large number of anime checkpoints are built on it. Like Pony, it is SDXL inside.
Files and nodes
One checkpoint, Load Checkpoint, Empty Latent Image, as for SDXL.
Settings that work
SDXL sizes, often a little larger (up to about 1536 on later versions, per the model page); 20 to 30 steps; cfg about 5 to 7; euler_ancestral or euler. Prompt: booru-style tags (1girl, solo, red coat, outdoors, rain) with quality tags the model page recommends (for example masterpiece, best quality).
What fits
LoRAs trained for Illustrious or NoobAI fit best; SDXL LoRAs load with mixed results; Pony LoRAs often misbehave. SD 1.5 and Flux add-ons do not work.
How the app helps
Shown as Illustrious on model cards; names with illustrious, noobai, ill or ilxl as separate words are recognised. The lesson Pony and Illustrious: tags instead of sentences writes a tag prompt.