Alright here are all the overlapped ID's.
"blue_selection_vendor_item_repair" skins not only the repair background, but also skins the non-existant "blue_selection_selectable_reward_normal" (background art for quest rewards) and "blue_selection_title_normal" (background art for titles).
All the "social_" asset IDs not only skin the social window, but for some reason skin the non-existant "blue_selection_trait_normal", which is the background art for the traits on the character panel.
It'd obviously be a lot better if these could be skinned independently, looks like a dev liked to cut corners
Another missing art is the money panel on the character screen where your stats are listed.