The K11 HAVE killed.

[Uchiha Josephus]

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None of those were dead. :|

 

[paratise]

Shino was like a heartless murderer in the forest of death...
Just as in Tobirama's dream chuunin exams.

 

[Moe22]

Choji killed Jirobo, Neji killed Kidomaru, Team 8 did kill those sound ninja, Shikamaru "killed" hidan that's all I can think of off the top of my head

 

[Hori]

are black zetsus people too (im sorry i couldnt resist)

oh yes Zetsu is a living thing

 

[Noni]

well thats funny ....
K11
Well neji killed that one spidey kidomaru
choki killed jirobo
shikamaru probably didn't kill hidan but he is immortal and buried him alive it almost the same thing.
Naruto is the main reason how Nagato killed himself. Whether he did or didn't he could have easily if he wanted to.