Ok I found out almost all the values of the fields for creating items! I will show them here!
Ok there is a field 'class' here are the values for each.
0 - consumables
1 - bags
2 - weapons
4 - armor
5 - reagants
6 - projectiles
7 - trade goods
9 - recipes
11 - quivers
12 - quests
13 - keys
14 - permanents
15 - miscellaneous
Next the field 'subclass':
0 - none
Class 0: consumables
0 - consumable
3 - potion
4 - scroll
5 - bandage
6 - healthstone
7 - combat effect
Class 1: bags
0 - bag
1 - soul shard
2 - herb
3 - enchanting
4 - engineering
5 - gem
6 - mining
Class 2: weapons
0 - 1H axe
1 - 2H axe
2 - bow
3 - rifle
4 - 1H mace
5 - 2H mace
6 - polearm
7 - 1H sword
8 - 2H sword
10 - staff
11 - 1H special
12 - 2H special
13 - fist
14 - miscellaneous
15 - dagger
16 - throwing
17 - spear
18 - crossbow
19 - wand
20 - fishing pole
Class 4: Armor
0 - miscellaneous
1 - cloth
2 - leather
3 - mail
4 - plate
5 - buckler
6 - shield
7 - libram
8 - idol
9 - totem
Class 6: projectiles
2 - arrows
3 - bullets
Class 7: trade goods
0 - general
1 - parts
2 - explosives
3 - devices
Class 9: recipes
0 - books
1 - LW pattern
2 - tailoring pattern
3 - engineering schematic
4 - BS plans
5 - cooking recipe
6 - alchemy recipe
7 - FA manual
8 - enchanting formula
9 - fishing manual
10 - JC formula
Class 11: quivers
2 - quiver
3 - ammo pouch
Class 13: keys
0 - key
1 - lockpick
now theres a field 'inventorytype'
0 - other
1 - head
2 - neck
3 - shoulder
4 - shirt
5 - chest
6 - belt
7 - legs
8 - feet
9 - belt
10 - gloves
11 - finger
12 - trinket
13 - 1 hand
14 - off hand
15 - bow
16 - back
17 - 2 hand
18 - bag
19 - tabard
20 - robe
21 - main hand
22 - off hand misc
23 - tome
24 - projectile
25 - thrown
26 - rifle
Next we have the qualitys 'quality':
0 - poor
1 - common
2 - uncommon
3 - rare
4 - epic
5 - legendary
6 - artifact
Then theres Sheath ID's 'SheathID':
0 - other
1 - 2H sword
2 - staff
3 - 1H sword
4 - shield
5 - rod
7 - off hand
I will try to get as many as I can on the post but this is what I have for now!
Have fun creating Items! and I hope this comes usefull!