Rainbow Ruby (a highly neglected cute 3D character) trained for SDXL in Illustrious. The main trigger word is "rainbow_ruby"
The resemblance may vary on the model.
Illustrious-XL-v1.0 gives quite crude results (mostly unusable)
animij_v10 returns really nice results, but with a bit less resemblance
waiNSFWIllustrious_v140 returns images with a very good resemblence but often errors and less details
novaAnmieXL_ilV180 returns images with a quite good resemblance and good details, but sometimes a bit too hallucinating
Try it for yourself :-)
Most checkpoints will give already a good result with a LoRA strength of 0.45 to 0.85. Higher numbers than 1.0 may result in high-contrast and plastic-like images