ItemFamily

These are defined in ItemBagFamily.db2
bit	Category
4 	Leatherworking Supplies
5 	Inscription Supplies
6 	Herbs
7 	Enchanting Supplies
8 	Engineering Supplies
10 	Gems
11 	Mining Supplies
12 	Soulbound Equipment
16 	Fishing Supplies
17 	Cooking Supplies
20 	Toys
21 	Archaeology
22 	Alchemy
23 	Blacksmithing
24 	First Aid
25 	Jewelcrafting
26 	Skinning
27 	Tailoring
The value being 2^(bit-1)