Hello!

These are the game assets you can target in Content Patcher:

UnlockableBundles/ShopTextures/<file name> for images in the assets/ShopTextures folder.
eg. UnlockableBundles/ShopTextures/Blue_Junimo

UnlockableBundles/UI/<file name> for images in the assets/UI folder.
eg. UnlockableBundles/UI/BundleOverviewBG 