Psionic Mentor (marked as Mentor, no category) -> "Tools" inventory category.
Protectorate Firearm Omnilube (marked as Enhancement, no category) -> "Consumables" inventory category, since there are no "Enhancement" category for it.
Human Brain (marked as Misc., no category) -> "Crafting" inventory category, since there are no "Misc" category for it.
Pearl, Gold Ring (marked as Misc., no category) -> How about sort it after Currency in the "Non-Plot" category?
Psi Beetle Brain in a Jar (marked as Combat Utility) - remove from "Plot" category, already in the "Combat Utilities".
Rotten Clam Meat (marked as Component) - remove from "Plot" category, already in the "Crafting".
Clam Meat, Shrimp (marked as Component) -> "Consumables" because Cave Hopper Meat is the same or move them together into "Components" category.
Captured Small Crab (marked as Tool) - remove from "Plot" category, already in the "Tools".
Any item should be categorized, if possible.