Yeah well you're stupid. Here's another file... I've already pretty much memorized it, but if you care.
Invincibility from ledge (begins at start of ledge grab) = 37 frames
Ledge hold waiting period before able to let go = 8 frames
Minimum ledge regrab waiting period from letting go of ledge(all characters) = 29 frames
8 + 29 = 37
0 frame room for error for all stalls without invincibility on the up-b to stay completely invincible
Must hit to let go on the 8th frame (to be off of it on the 9th) of holding the ledge (0.1333... seconds)
LHWL = Ledge-hop -> Waveland back towards edge -> fastfall -> regrab
Jump = drop -> FF -> DJ -> regrab
Bowser's ledge attack stall is on fourside or the rock form of Poke Stadium
(Anything over 37 is not an infinite stall without up-b invincibility)
Ganon : jump=37, LHWL regrab=37
Falcon : jump=40, LHWL regrab=37
Zelda : up-b=37
Sheik : Dur Dedurr. *****' 10 frames out of 37 room for error >_>
Bowser : jump=37, LHWL regrab=43, ledge attack with fast fall regrab=35 (39 non-FFed)
Mewtwo : double-jump to ledgecancelled up-b=47 total minimum(invincible from up-b as soon as ~29), up-b=37
Pikachu : double-jump to ledgecancelled up-b=37, up-b=37
Pichu : ? (probably same as pikachu)
Fox : up-b=37, over-b=38
Falco : up-b=37, over-b=37
Jiggs : LHWL regrab=41, ledgehop to FF f-air=50