GT = Georgetown ouptpost
Limey is steele
Dooku/Severus = ?
Camp Eagle is either a place, or an operator -when CIA guys stay "out" in the field too long, they tend to lose their marbles. (i.e. Bourne series).
S could be Strzok, Juules might be Lisa Page. Didn't they have their tryst in Gtown?
Huck = ?
Roger = ?
Comey, Clapper, Wray, Priestap, McCabe, Yates… look at the graphic posted today. They're all there.