Wanted to highlight the game's known relavant codes here so you guys don't have to go searching around on random websites. Hope it helps!

Play as Arkane Highlight Blade and press the following in quick succession Down 20 times then press all 3 kicks

Play as Kyber Highlight E.Honda, Ryu, E.Honda, Balrog, E.Honda, Ryu, E.Honda, Balrog, E.Honda, Ryu, E.Honda, Balrog, E.Honda Then press all 3 punch buttons

Extended combo Mode Hold Right and press Start, then press Short

Team Select Mode Press Start, Roundhouse

Random Select Hold Up and press Start

Play as Akuma in Street or Trial Battle Highlight Guile and press the following in quick succession Up, R1, Down, L2, Right, L1, Left, R2

Play as Akuma in Street or Trial Battle Select Guile and press the following in quick succession Up, B, Down, Z, Right, X, Left, Y at the character select screen.