Even Mihawk knows Vista why King wouldn't know who izou is? He is one of Wb's commanders, Big Mom and Pero knew also King.
This chapter is a proof that people are too easy to influence, one thing happens and everyone go crazy!
It was the ultimate moment for the Scabbards.
Jack seems interested only by the dukes.
Queen is .. well don't know where but still useless
Kaido and King losing their weapons was probably be the best shot scabbard had. It showed their motivations, their hates, their determination.
Don't forget most of the scabbards are the same from 20 years ago. They did shit at that time, and for the others who became stronger, well BP also became stronger. It's gonna be a massacre next chapter for the scabbards, good thing Luffy is already there.