SI_ Get Crafting Skill Type Name

[circonian]

Is there an SI_ to get crafting skill type names? I want to do something like this:

(Note: This is just an example, it does not work. I made up SI_CRAFTINGSKILLTYPE)

d("CraftingSkillType: "..GetString("SI_CRAFTINGSKILLTYPE", CRAFTING_TYPE_BLACKSMITHING))

Also is there a list of those SI_ somewhere besides the wiki or using zgoo?
I've seen other posts where people use SI_'s that dont show up on the wiki or under ["SI_"] when using zgoo like: SI_ITEMTRAITTYPE Where do you guys find these at?