I have gone through the new scenes of the game. If you find out something else please contact me so I can remove the footage stamp. The only one who I'm sure isn't in the game is David Lodge who has been replaced by Kirk Thornton in the new segments.
I believe the credits are different after Episode 1.
The cast list for Episode 2 are different than what is on here at the Lastman Wiki if you go onto that site.
I pointed that out to him since KeybladeNoctis was the one who put it up so chances are they actually later changed the credits for those episode instead of keeping the same cast list as Episode 1 since some characters don't show up in some episodes.
EXAMPLE: Monica Mendoza is credited in Episode 1, not in Episode 2 as there are only five characters.