Yeah, the C- and the A- loci in mice are the most complicated, with many alleles on each that can interact (and counteract) with each other plus those in other places, all of which have varying degrees of dominance to each other.
Your babies each have one copy of himalayan (ch) or albino (c) from the father. They cannot have both, or they would be himalayan (ch/c) or albino (c/c). Also, you can only inherit one allele from each parent (so the daddy had to give one or the other).
They each also carry blue (D/d) from the mothers.
The tan ones are also at/a (heterozygous for black self). The selfs are a/a (homozygous black selfs).
Tan (at) is dominant to black but incompletely dominant to agouti. It is epistatic to himalayan (and albino) and doesn't show up, which is why you didn't know you were dealing with tan in the father.
To have a "real" fox mouse, you need the chinchilla allele. This is on the C-locus along with himalayan, albino, beige, and a few other lesser common alleles. It is denoted cch (note: not ch, people get these confused but they're separate).
Since your baby mice all have either ch or c from their father, they can't possibly have cch from their mothers because then they wouldn't be black or black tans as they are. On top of this, chinchilla is a very uncommon color in the US outside of the show ring. I've never known anyone in the US have a "true" fox mouse from petstore-derived animals. They're all poor tans.
You're dealing with very poor representations of every color you're working with, so if you breed from them in the future you'll likely get lots of babies who you just aren't sure what they are. You're combining at least black tan, black, blue, himalayan, albino, satin, and angora. Each of these can have a slight (or major) effect on the others. I also wouldn't be surprised if it turns out that there are more common recessives (such as white spotting, chocolate, or recessive yellow) hiding in there, too. You wouldn't be the first person dealing with such a mess.
Have you read finnmouse? It's pretty much the most respected mouse genetics site out there and is a good read. I'm sure a Google search will turn it up.