1st level followers: Skeleton Baboons(Good str and dex for 1hd, 3 natural attacks, good versatility)
2nd level followers: Skeleton Splinterwaifs(Amazing dex for 2 hd, great leaders for arrow volleys)
3rd level followers: Skeleton Unicorns(Great speed, Good str and dex, 3 natural attacks(One is a +3 magic weapon))
4th level followers: Skeleton Nighmares(90ft perfect fly speed.... that is all any of us should care about from them)
5th level followers: Skeleton Undecided(Still trying to figure out the best option here)
6th level followers: Shadows