Are any of those lioness in the background Sarafina?

Yes. Third lioness on top the one with her head down. Because it has her face shape and looks like her. The darker color is from being In the shade.

I don't believe so. The colors don't exactly match, and from what I can see, neither do the face shapes. She may very well be there, but I doubt it.

One of them kinda looks like her, but the coloring is too dark... I don't think she's there

Yes all of these lions are

I bet she's the second lioness on top, next to the one who has her head down, because her arms looked like Sarabi's and I bet Nala is right there in her arms.

no

yeah i think the middle one if any of them

Probably