WELL.

I’ve been interested in this as well!

The closest match that I have available to compare is a 90s gymnast body Christie (to the right of Tzipporah with the pink earrings in the first photo). Tzipporah falls right between her and the yellow top made to move (to the left of Tz).

I have three fresh dolls: Mia, Indigo, and Lynette. Mia and Indigo ( big fro and long braids) are too light and Lynette (puff wearing stripes and checks) is too dark. My single Prettie Girl Kimani ( glasses and blue necklace) is too dark, but her line has some skin diversity so that might be a decent place to check. There is also a skin tone in between the fresh dolls that I own that I would love to compare, but I just don’t have them. At least that narrows it down to maybe those ones. Tamra and Gabrielle, I think. They look like they’re a mid-tone between Mia and Lynette, anyway.

Black musician Barbie and the floral pants made to move are also both too dark. The tan and dark haired soccer made to move doll is not shown but she is also too light. She looks similar to the lighter fresh dolls in tone.

Tzipporah is warmer and redder, and most of the other girls are skewing cool or yellow.

So the answer from what I have available is a late 90s early 2000s gymnast body Christie. Unfortunately, I do not know which one she is, nor am I sure I would want to inflict that body on Tzipporah haha.

I’m sorry I can’t be of definitive help but maybe I’ve helped you eliminate some options!