the reason the gino trick is 100% nollie fs 270 to ss bs tail is because of which shoulder he's looking over
if he'd done the same trick but looking over the other shoulder when sliding then sure, it's a nollie fs 270 fs ns
with the yuto trick, which goes in the other direction, there is no looking over the shoulder during the slide to create a definition as per the above
i would call it a noseslide. to me it doesn't have an ss fs ts feel to it at all, but i can see why it could technically be described as such. if he came out fakie, it'd probably feel more like a ts