Doesn’t US Mobile offer all the of the major networks? I’ve also been looking at them recently, and my understanding is that the three networks they offer are (despite their silly codenames) in reality just verizon, t-mobile, and at&t. You can pick which one you want to use and even switch between them without too much hassle.

Seconding Band of Brothers. It’s cut from the same cloth as Chernobyl. If OP is looking for more of that specifically, then It’s an obvious and excellent recommendation.