SDXL:
Trained on Animagine and Pony models
Covers 14 Deltarune characters with variations: Kris, Noelle, Susie (light/dark world versions), Jevil, Ralsei (Ch.1/2), Berdly (light/dark), Spade King, Lancer, Cyber Queen, Rouxls, Spamton (+Neo), Swatchling, Tasque Manager, Rudolph
Prompting Tips:
Place trigger words at beginning of prompt (except Pony model)
Pony model trained with shuffling, so you can use trigger words in different places with higher success
Additional details help (e.g., Kris's sweater type)
Caution with "masterpiece, best quality" in Animagine models, can cause gender bend and NSFW
Legacy Models:
Characters may struggle to interact unless similar
Can influence output style minimally
Rework Information:
See "about this version" section for specifics, same goes for other models
Pony Model:
Slightly undertrained, but sufficient for most characters
SD1.5 Model:
Lower quality than SDXL, requires more detailed prompting
Limited comparison data with other 1.5 models
It's been trained using the Illustrious model, but in my tests models like NoobAI have had no problems, although v-pred models can be a bit messier than usual. I guess they aren't that far off from each other in terms of training.