Sorry for the low volume, I don't have a good way to fix that.
If you want to learn more about grab releases, watch the Beefy Smash Dood's video on it: https://youtu.be/UC3PF-LxS1U
Here's the characters that have a faster jab than Yoshi (note that this does NOT mean the combo is guaranteed; *****Yoshi's jab is frame 3 while every character's shield in the game comes out frame 1!!!*****): https://www.reddit.com/r/YoshiMains/comments/3nx981/list_of_characters_that_yoshis_grab_release_combo/
About grab releasing Cloud offstage:
- It has to be an air release, which you can do by NOT pummeling the opponent (again, watch the Beefy Smash Dood's video, which explains this)
- Cloud has to have already used up his double jump, otherwise he can recover pretty easily
- Technically Cloud can still recover using Neutral B/airdodge/walljump, but it'll make him a lot easier to gimp
Music: Yoshi's Island - Fortune Street (https://youtu.be/FQe-7mHFWcY)
Special thanks to the Yoshi discord for help making this (you can join by finding the link in smashcords.com), including RapidRhythm who gave me the song!
Video Editor: Movie Maker