I'l say tsunade.
People say the k11 know her abilities,well it's vice versa too,she knows each of their abilities as well,and her great experience will allow her deal with it.
People dont seem to understand that if she hits a heavenly kick of pain,any k11,who has less durability than the 2 buildings that broke,will be killed if they caught in the radius.
She can make fissures with a finger,a fist would make a large one. She herself knows who to target.
And people should stop saying this neji crap,no way is he above her in taijutsu,if she hit a demi god level opponent with the ems,then she can hit a jonin with a byakugan.
Kiba?,are you kidding me?,she can simply sidestep his rotation attack,and one punch will kill him whether is in rotating or not,since when did kiba now match tsunade?.
Katsuya alone,will be a big problem,how many k11 can dodge her acid?,manda cudnt dodge IIRC,he had to shed his skin,
shika's shadows wudnt hold tsunade for a second,the stronger the opponent,the tougher it is to hold them,i doubt he can hold the raikage for a second much less tsunade.she also knows of his intelligence,sje could let katsuya handle him,katsuya could just split into thousands of clones and distract the k11,physical atacks ae useless,not even CT worked. You think the k11 can take a thousand mini clones spitting acid at them?
Her SOH will allow her tank nearly anything easily. Not to mention her evasive skills.
She can beat them with a simple touch,turning her chakra to electricty and screwing with their body,then finishing them
1,2 or 3 shockwave attacks and not much k11 are left. Katsuya spits acid from her clones,tsunade takes advantage and fight is over.