^^^Mazer Rackham for Kingsley (Ender's last teacher), and Major Anderson for Davis. Not sure the 2nd one really rings a bell for me in the story, but my best guess/recollection is that she (wasn't it a HE in the book?) is the one Graff is talking back and forth with in the emails they start a lot of chapters with? I don't recall Anderson and Graff both being on the station together, but maybe it's just been a while...
Yes, I'm pretty sure Anderson was a male in the book. Whatever, it's post nu-BSG, we can deal with this sort of thing. I thought those were actual conversations, not e-mails. Wasn't Anderson Graff's second in command?