Only Textures / Models (You can count the Landscapes, Items, Characters, Enemies / Bosses, whatever as this), Effects, Text Datas and other things are in the Package.

Keep in mind, this Game uses Realtime Cutscenes, that doesn't mean each time you see a Character in some Cutscenes they will take up more Space. Nah, the Character Model exists once and gets loaded into the Cutscene and I highly doubt one weigths over 3-4 MB (Textures are the most).

Most of the New Stuff when it comes to the Characters still use the same Models from ARR (Merlwyb or Lahabrea)

You could say 70-75% of the Download are Texture Based / Pre-Rendered Cutscenes. (INB4 saying FFXIII did this and ENG/JPN Language made it weigth around 60GB)