The 10 highest ratings per artists for this Kohaku:
01. Southern All Stars
02. Kenshi Yonezu
03. Yumi Matsutoya
04. Gen Hoshino
04. MISIA
06. TWICE
07. Kana Nishino
07. Seiko Matsuda
09. AKB48
10. Miyama Hiroshi
10. Arashi
This overview is from Nikkan Sports, but you can basically find it everywhere today.