Milly: Hashifurupufu - hufflepuff. No, not gonna check the katakana table; don't need more then one guess. Kallen to Griffindor, CC and Lelouch to Slytherin. The hat doesn't need more than one guess for Lulu either.
Now let's do the rest: Shirley - Hufflepuff. Nina - Ravenclaw. Those are easy. Suzaku and Nunnally could go anywhere but Ravenclaw, depending on episode and interpretation.
HEY!! You haven't put it on me yet!! And what's that about "Az"!?You are...Hufflepuff!!Of course.You are...Gryffindor!!Hmm!Hmm...You are Raven...Slytherin!!Well,Hmm...that's about right.Az...Slytherin!!