who's the best kpop singer among these?

GIRLS
*IU
*snsd TAEYEON
*csjh LINA
*davichi LEE HAE RI
*2NE1 PARK BOM
*rania JOOYI

best dancer?
*2NE1 MINZY
* after school KAHI
*4 minute HYUNA
*csjh STEPHANIE
*snsd HYOYEON

best rapper?
* BEG MIRYO
*2NE1 CL
*after school BEKAH

please rank them for each group :DDDDDDDDD