First model based an actual person. She is adult content model Nancy Ace.

Note, the model was trained using Penelope Mitchell as a base.

You HAVE to use "Penelope Mitchell" in the prompt, NOT "Nancy Ace"

SDXL had no idea who Nancy was, so to make training a lot smoother, I started with someone "similar" in looks.

Model was trained using 100+ images and learned not just her face well, but her body in general. Breasts and frame build are very similar to her actual body. I noticed adding (nude, naked, NSFW) to the prompt helped pull them through, but they do also randomly pop up in casual use.