Well now that I've fixed my fuck up and did some actual research here is my second attempt at guessing the following chapter girls because it is better than this argument:
Chapter 3 girls:
Mirage, Magik, and Wolfsbane
Chapter 4 girls:
Jubilee, Rachel Summers, and Magma
Chapter 5 girls:
Emma, Boom-Boom, Polaris
Why Emma and Polaris in chapter 5? Well, Polaris was under mind control for the entire Mr. Sinister arc, which will likely be chapter 4, and barely had a role previously, so having her join at the end of the chapter 4 arc when she is freed makes the most sense. Emma becomes more and more affiliated with the X-Men during the years chapter 5 will cover as well. Polaris isn't included because I am not sure anyone wants to deal with the Kwannon mess, and other girls introduced during this time are not included because I haven't read anything with them yet.
Again, this in no way matches what the devs have planned and is only based on Uncanny X-Men up to 240 and a wiki dive.