My personal preference only and is not based on technical skills
2NE1:
1. CL
2. Minzy
3. Dara
4. Bom
EXO:
1. D.O
2. Baekhyun
3. Chanyeol
4. Chen
5. Kai
6.Xiumin
7.Suho
8. Lay
9. Sehun
KARD:
1. Jiwoo
2. Somin
3. J.Seph
4. B.M.
BTOB:
1. Changsub
2. Hyunsik
3. Sungjae
4. Eunkwang
5.Ilhoon,Minhyuk
SHINEE
1. Onew
2. Key
3. Jonghyun
4. Taemin
5. Minho
