Other styles can't be chosen from the generator, I think civit.ai team made some changes and broke something, hopefully this will be resolved.
Update: But you can manually add other styles from their page by pressing "create."
Also scale is limited to 0.7 to 1.0 for some reason.

@prgfrg23 It was fine when it was available in scale from -1.0. to 2.0 I think, always nice to have a bigger field to experiment even if you get weird results.

@prgfrg23 i have no idea how this works, but i was using negatives and 1.3+ to get some cool effects without any distortions, examples:
rainbow on negatives (-0.6) gives a more dull, realistic color style with everything else remaining anime style
smooth anime (1.3) and (1.5) works wonderfully fine
concept art twilight (1.5) or even (1.7) can generate amazing starry night skies images, or very cool edgy long coats, foggy backgrounds and even monsters
photo on negatives (-0.5) does something weird to color, paired with high smooth anime can give a cool effect removing some contrasts and making colors more uniform

@prgfrg23 sometimes I want to add just a little bit, like 0.2-0.3 for line art for example. So having full range is better.