This is a reference for myself for how I order my gallery.

0 - LE Makers
1 - Costumes
2 - Treasure Chests
3 - Favorite Non-LE Marapet Makers
4 - Non-LE Marapet Makers
6 - Favorite Holograms
7 - Favorite Jewellery/Make-Up/Contact Lenses
9 - Favorite Wings/Tails
13 - Favorite Clothes
15 - Favorite Headwear
20-24 - Foxfire Map
30 - Random+Skins
31 - Pearls
45 - Tantibs
49 - Favorite Minipets
50 - Liked Minipets
51 - Minipets
55 - Holograms/Wings/Tails
56 - Eggs
57 - Presents
59 - Food
60 - Drinks
61 - Books
62 - Battle
63 - Gumballs
64 - Toys
65 - Clothes
66 - Headwear
67 - Footwear
68 - Armwear/Tattoos
69 - Belts
74 - Jewellery/Make-up/Contact Lenses
75 - Stamps
76 - CDs, DVDs