I thought each eye could only have 1 power though. so how could he have multiple genjutsus from his MS if both eyes were already shown using KA. Also how did that guy know about shisui's power in the first place... I'm assuming shisui didn't use it on him, and that even if he did, how the hell would they know it was his MS power and that it was a mega powerful genjutsu?
Aoi has the Byakugan, he said he reckognised the chakra signature in Danzo's arm and left right as being Shisui's.
As for the number of technique goes... like i said, maybe it was a bad translation so i dont know exactly how it works.
Amaterasu is from one eye, so is Tsukuyomi. And then both mangekyo activate to summon Susano.
We know each eye can perform KA in Shisui's case... but can he perform an other genjutsu with both? Is there an extra one per each eye? It's impossible to know.
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It says the Ultimate genjutsu from Shisui's Mangekyo, so going with this, he has more than KA, but its still genjutsu.