With that being said, here they all are:
To use them, you need to use the cheat table as I said, go into Party Stats > Yusuke > Equip and into outfit, enter one of these IDs:
182 (Velvet Yusuke)
191 (Starlight Yusuke)
202 (PQ2 Yusuke)
212 (Neo Featherman Yusuke)
223 (Demonica Suit, no helmet, Yusuke)
The Demonica Suit with the helmet isn't included as it crashes the game for now.
Download (Google Drive)