File 1 contains a save file that is able to perform Equipment Sharing upon performing TA Glitch and entering NG+. This is a spare file that can be saved over and isn't needed for TAs.

File 2 contains art setups for all TAs which would require Sharla having arts inheritance. All replica monado quests are available for Equipment Inheritance.

File 3 contains art setups for all TAs which would require Riki having arts inheritance. All replica monado quests are available for Equipment Inheritance.

Some art setups for TAs which don't involve Riki or Sharla might be on either file 2 or 3, but might not be on both.