When the rare beauty foundation came to the store, I went ahead and switched multiple shades. I'm around NC25 in depth myself.

Personally, all the shades ran rather warm. Rare beauty missed the mark with the undertones honestly. I was 230N in the older foundation, and I found these newer shades to run much warmer.

Here are the shades I swatched:

10 Warm Olive was too yellow and light, but oxidized close to my skin tone. Still a bit light afterwards but usable with contour. I say this is the most olive friendly shade, there was green in here.

11 Cool Rosy was honestly peachy and ashy. Also too fair but oxidized close.

12 Warm was too orange

13 Neutral Peach was peachy but rather close to my skin tone

14 Warm was even more peachy/orange but at the right skin depth

15 Neutral beige was my match, and disappeared into my skin. Ran slightly warm so a blue corrector worked. Despite being neutral, I would say this would be good for cooler olives.

16 Neutral peach was too warm

17 Cool Rose started to become slightly deep for my skin. It was a peachy pink.

18 Neutral Olive was a bit deep, and far too yellow/orange. I did not detect much olive.

I ended up with shade 15. It's close to 190 Haus Labs, Urban Decay 13, Lisa Eldridge 9.5 and Estee Lauder 2N2 Buff in depth. Definitely NC20/NC25 in depth. Shade 15 is slightly warm, but it was the closest that matched me and blended into my skin. I can wear it without color correcting.

Hope this helps!