Well it really depends, you could narrow things down a bit. (I could be wrong, but bare with me.)
(This is from DEON'S GENESIS mod... So it may look different from yours. Just fyi...)
[DIGGER:ITEM_WEAPON_PICK]
[WEAPON:ITEM_WEAPON_SCOURGE]
[WEAPON:ITEM_WEAPON_AXE_HAND]
[WEAPON:ITEM_WEAPON_HAMMER_WAR]
[WEAPON:ITEM_WEAPON_SWORD_CLEAVER]
[WEAPON:ITEM_WEAPON_SPEAR_JAGGED]
[WEAPON:ITEM_WEAPON_MACE_SPIKED]
[WEAPON:ITEM_WEAPON_BOW_RAZOR]
[AMMO:ITEM_AMMO_ARROWS_JAGGED]
[WEAPON:ITEM_WEAPON_PIKE]
[WEAPON:ITEM_WEAPON_BARDICHE]
[WEAPON:ITEM_WEAPON_DAGGER_LARGE]
[WEAPON:ITEM_WEAPON_FLAIL]
[WEAPON:ITEM_WEAPON_MORNINGSTAR]
[WEAPON:ITEM_WEAPON_SCIMITAR]
[ARMOR:ITEM_ARMOR_BREASTPLATE:COMMON]
[ARMOR:ITEM_ARMOR_MAIL_SHIRT:COMMON]
[ARMOR:ITEM_ARMOR_LEATHER:COMMON]
[ARMOR:ITEM_ARMOR_CLOAK:COMMON]
[ARMOR:ITEM_ARMOR_TUNIC:COMMON]
[ARMOR:ITEM_ARMOR_ROBE:COMMON]
[HELM:ITEM_HELM_1HORN:COMMON]
[HELM:ITEM_HELM_SPIKED:COMMON]
[HELM:ITEM_HELM_KETTLE:COMMON]
[HELM:ITEM_HELM_CAP:COMMON]
[HELM:ITEM_HELM_HOOD:COMMON]
[HELM:ITEM_HELM_MASK:UNCOMMON]
[GLOVES:ITEM_GLOVES_GAUNTLETS:COMMON]
[GLOVES:ITEM_GLOVES_GLOVES:COMMON]
[SHOES:ITEM_SHOES_SHOES:COMMON]
[SHOES:ITEM_SHOES_BOOTS:COMMON]
[SHOES:ITEM_SHOES_BOOTS_LOW:COMMON]
[SHOES:ITEM_SHOES_SANDAL:COMMON]
[SHOES:ITEM_SHOES_SOCKS:COMMON]
[PANTS:ITEM_PANTS_PANTS:COMMON]
[PANTS:ITEM_PANTS_GREAVES:COMMON]
[PANTS:ITEM_PANTS_LEGGINGS:COMMON]
[PANTS:ITEM_PANTS_LOINCLOTH:COMMON]
[SHIELD:ITEM_SHIELD_SHIELD]
[SHIELD:ITEM_SHIELD_BUCKLER]
You could narrow down the weapons they use. You could change armor so all that is there is breatplate and mailshirt and leather. You change helm so there is just cap, spiked, 1horn. You could change gloves so there is only gauntlets. You could change shoes so there is only boots and/or boots_low. You could change pants so there is only greaves and leggings.
This could narrow down what is available to their civ. You MiGhT get op goblins though...