I'm not seeing any calicos in those babies, but I'm hesitant to be certain just looking at photos. While the higher white ones are obvious at hatching, even the lower white ones can be identified by a pinkish tone where the white is going to come in. Within a few sheds, it gets pretty obvious, in my experience.

Here is a lower white calico female that sounds like she is about the same age as yours:



In the next two photos, there is a lower white calico male at one month, and at two months old so you can see the progression of the white:



In the higher white ones, it's pretty easy, but in the next three photos you can see how the white parts go from pink to white in the same snake progressing from just hatched, to one month, to few months:




It comes in pretty quickly, and should be obvious in person.