Oh! Well, I really love Yo and Yo just missed the GP Finals. Also, it is nice to see other camps represented. So, will take it.My preliminary guessing is this: JSF goes with the Jr. National Champion first, and the second spot goes to the top placing skater who's from a different section of that of the Champion (Rio from East, so a second spot to a skater from West; Mao from West, so a second spot to a skater from East). That's only a guess. I think another point to consider is if the skaters are within the age limitation (which I'm not familiar with.)
No, there's no such a sub list to the invitation list, unfortunately.
So, Ami won’t be at Nationals
She is still young and will have other opportunities