It's also missing from \Public\Shared\Stats\Generated\Structure\Modifiers.txt modifier types "Weapon", "Armor", "Shield", "Potion", but it IS added for modifier type "Character". So characters can have a RogueLore modifier, but items cannot. :P
It is included in \Public\Shared\Stats\Generated\Structure\Base\ValueLists.txt valuelist "Ability", which is used by modifier type "SkillData" (spells, special abilities, etc).