The obvious way to sort a styling catalogue is by subject: princesses here, weddings there, anime somewhere else. This one is sorted that way on the surface and by something else underneath, and the difference is worth explaining.
Each section collects games that ask for the same kind of decision. Bridal styling is a narrow-palette problem, where the colour has to be pushed into the bouquet and the jewellery because the gown will not carry it. Streetwear is a proportion problem — oversize one half, never both. Anime is a face problem, because the eyes occupy more of the composition than any garment does. Costume styling is a commitment problem, where half-measures look worse than either extreme.
Sorting this way means a game sometimes lands in a section its title does not suggest. A wedding game built around colouring the gown belongs with the other colouring titles as much as with the bridal ones, and it appears in both.
The practical benefit is that playing a section in sequence teaches something. Four bridal games in a row make the narrow-palette rule obvious in a way one does not, and the same is true of every other section here.