The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- TransportPerformanceUnit (3 members)
- EnergySystem (1 member)
- Metadata (0 members)
- Robot (2 members)
- Competence (0 members)
- EmissionValue (2 members)
- PersonRole (0 members)
- Corporation (0 members)
- EmissionQuantityValue (0 members)
- Potential (2 members)
- OilPowerPlant (0 members)
- ForceUnit (1 member)
- CommaSeparatedFileFormat (0 members)
- DeliveryCost (0 members)
- KiloTonOfOilEquivalent (0 members)
- Abstand (1 member)
- InteractingRegion (0 members)
- DieselVehicle (2 members)
- Database (0 members)
- CrossCheckingAgainstOtherModels (0 members)
- Percent (5 members)
- SquareMillimeter (0 members)
- Sector (6 members)
- Prüfgeschwindigkeit (4 members)
- Nuclear (0 members)
- CombustionFuel (12 members)
- ElectricCharge (1 member)
- Nanomole (0 members)
- QualifizierendeKnotenannotation (1 member)
- WindEnergyConvertingUnit (0 members)
- IndustrialMaterial (6 members)
- VehicleOperationalMode (0 members)
- Charcoal (0 members)
- DiscountRate (0 members)
- Kilobyte (0 members)
- EmissionCertificatePrice (1 member)
- HeatGenerationFunction (0 members)
- Elongation (3 members)
- Furlong (0 members)
- OSW63e53b08866c51908e8882b1db2a597b (1 member)
- Solver (0 members)
- Airport (0 members)
- PartsPerNotationUnit (6 members)
- Temperatur (2 members)
- DeliveryTime (0 members)
- SolarElectrolyticHydrogen (0 members)
- PortionOfMatter (44 members)
- Commodity (3 members)
- Meter (0 members)
- Priority (3 members)