Sorry for the late response. Itch likes to block quite a few comments for whatever reason.
Those are partly mild/wild variations mostly for Nani, Rose, and Luna for the earlier images. Later on you're mainly missing some scenes related to the optional NTR path including Stacy/Tanya Dark Path, Rose that are required to unlock the True Dark Ending. Last page variations of Amy's scene with father watching or not and a variation on the Principal scene.