I'm pretty sure that if you're hips go above you're shoulder then its considered inverted. Thats why lots of flat 3's look inverted (feet above the head) but they are not considered an invert. So the video I would consider a double misty.
def bio to misty. he doesn't flip over his head at first but the second time hes inverted so thats a misty. how could you go bio to misty anyway? momentum is wrong.
the second video tho at 0:30 looks like a dub bio but I feel like its more like a bio to flat. no expert tho