With the exception of the 6.5cm, those are all 223-size cases and would be pointless in an AR10. Also, they said they can't make it in 5.56 because then it would end up being called an AR15 variant.
Now, if we want heavier pills, 358win or 338fed would be good, or 260rem/7mm08 would make for nice options in those after lighter and faster.