The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Agent (14 members)
- ObjectiveFunction (0 members)
- Ratio (0 members)
- Recipe (4 members)
- Centimorgan (0 members)
- Ramping (1 member)
- Electrical (0 members)
- TertiaryControl (0 members)
- AccreditationDocument (0 members)
- ExclusionSubsetOntologyModule (0 members)
- LatentFluidGaseousHeatStorageObject (0 members)
- MilliliterPerKilogram (0 members)
- EndTime (0 members)
- FuelDemand (0 members)
- MillimetersPerDay (0 members)
- Canal (0 members)
- HubHeight (0 members)
- EnvironmentalTemperature (0 members)
- Diameter (5 members)
- BiogenicIndustrialWasteFuel (0 members)
- MicromolePerKilogram (0 members)
- MicromolePerLitre (0 members)
- RenewableEnergyShare (0 members)
- Second (0 members)
- PlaqueFormingUnitPerVolume (1 member)
- LuminousIntensityUnit (1 member)
- HeatingGridComponent (0 members)
- EmissionConstraint (0 members)
- Occurrent (5 members)
- Truck (5 members)
- Becquerel (0 members)
- EffectiveDoseUnit (0 members)
- Dog (0 members)
- TimeUnit (13 members)
- VolumetricFlowRateUnit (1 member)
- CellsPerMilliliter (0 members)
- SorptionHeatStorageObject (0 members)
- Petajoule (0 members)
- Function (2 members)
- PrimaryEnergyConsumption (0 members)
- Exajoule (0 members)
- SimulationNode (0 members)
- NitrousOxide (0 members)
- AviationGasoline (0 members)
- MicronPixel (0 members)
- OSW886e3e6addac5401968b94baf847ac3f (1 member)
- GoodRole (1 member)
- Sample (1 member)
- Prüfmaschine (1 member)
- TestOntologyClassA11 (0 members)