Blue Yoshi
Smash Master
I see one combo I often use that isn't there. If for some reason I have to use up-air (they're too high above me and Nair won't come out fast enough), I often follow up the up-air with an up-B. The up-B has enough hit-stun for you to fastfall after it and avoid being punished. Sometimes when I do this, I kill my opponent off the top of the screen (stage is a factor for this to happen). If they're too high after up-air such that only up-B will hit them, then they will have more than enough hitstun for you to do this unpunished.