Trained for IllustriousXL mostly with anime screencaps (thanks to https://fancaps.net/) and a few other sources - using kohya_ss. I would mostly recommend a weight around 1.
Use tiger tail in the prompt for her tail.
I was wandering how well IllustriousXL would be able to learn the multicolored hair pattern since PonyXL struggled a bit with those. Well, I think it performed quite well.
IllustriousXL is quite awesome for artistic expression, style mixing, has excellent prompt following and it knows many characters. For anime style it's certainly a Pony replacement for me.
Note: The sampler isn't displayed correctly in my preview images. I used Euler Ancestral CFG++ with Align Your Steps. If you happen to also use Comfy you can download the png and drag & drop it into comfy to see the workflow.