Luigi's fireball got nerf, it has more ending lag, by 3 frames, correct me if I'm wrong, but anyway I had to go and test jab locking, how many of them you can jab locked once or three times.
I tested this with 20% and on Battlefield. Now there is 23 characters you can jab lock only once, before patch it was 9.
I managed to jab lock some of the characters with two fireballs, but I listed them to one fireball instead, so there wouldn't be any confusion.
--One fireball--
Mario
Luigi
Peach
Yoshi
Rosalina
Diddy Kong
Zelda
Sheik
Zero Suit Samus
Palutena
Marth
Greninja
Ness
Wii Fit Trainer
Shulk
Dr. Mario
Lucina
Pac-Man
Megaman
Sonic
Lucas
Roy
Ryu
--Three fireballs--
Bowser
Bowser Jr.
Wario
Donkey Kong
Mr. Game & Watch
Little Mac
Link
Ganondorf
Toon Link
Samus
Pit
Ike
Duck Hunt Duo
Kirby
Kind Dedede
Meta Knight
Fox
Falco
Pikachu
Charizard
Lucario
Jigglypuff
R.O.B.
C. Falcon
Villager
Olimar
Dark Pit
Mewtwo