Thank you so much for this amazing commission!
I love how it all came out!
Each of the three vixens of each race has their own unique look and style.

I look forward to commissioning you again in the future! ^^

The orange vixen on the left is a sort of secret in Star Fox: Adventures.
Taking assets from the game and free camera view, there is a pinup poster of some orange vixen on the Great Fox.
I theorized that the orange vixen could be a Papetoonian Vixen (Papetoon - same desert planet as Fox McCloud).
Here is the poster: https://i.redd.it/rfvi9brsmmm51.png

The white vixen in the center is an original character from a fan species of arctic foxes known as the Alopex that a friend and I are working on.

This artwork is a fan story thing where the three races of foxes (Papetoonian, Alopex, and Cerinian) were once all united or came from a common ancestral fox race before splitting into their three different races.

To sum it up -
Papetoonian: Desert Foxes
Alopex: Arctic Foxes
Cerinian: Jungle Foxes

Hopefully this helps answer your question.

Fox, Wolf, and I: https://www.youtube.com/watch?v=wbUpGoOjFWw

This is nice, and something rather new :)