| 1 | Association Type | Categorize associations by a type. | Association |
| 2 | Category Type | Categorize categories by a type. | Category |
| 3 | Charter Type | Categorize charters by a type. | Charter |
| 4 | Excerpt Type | Categorize excerpts by a type. | Excerpt |
| 5 | Experience Level | Defines the context through which readers acquire skills. The level sets the expectation on the author's techniques to teach. | Topic |
| 6 | Experience Level Type | Categorize experience levels by a type. | Experience Level |
| 7 | FAQ Type | Categorize FAQs by a type. | FAQ |
| 8 | Generic Type | Categorize generic documents by a type. | Generic |
| 9 | Glossary Item Type | Categorize glossary items by a type. | Glossary Item |
| 10 | Media Type | Resources are identified by their media type. This may be the MIME type, but also a human readable string, that identifies the syntactic format. | Resource |
| 11 | Media Type Type | Categorize media types by their type. | Media Type |
| 12 | Metadata Type | Categorize metadata documents by a type. | Metadata |
| 13 | Module Type | Categorization of document modules for single sourcing. | Module |
| 14 | Organization Type | Categorize organizations by a type. | Organization |
| 15 | Person Type | Categorize persons by a type. | Person |
| 16 | Profile Type | Categorize profiles by a type. | Profile |
| 17 | Quote Type | Categorize quotes by a type. | Quote |
| 18 | Relation | Organizes glossary items. | Glossary Item |
| 19 | Relation Type | Categorize relations by a type. | Relation |
| 20 | Resource Type | Resources are identified by their type. This is not the MIME type, but human readable string, that identifies the semantic, rather than the syntactic format. | Resource |
| 21 | Role Type | Categorize roles by a type. | Role |
| 22 | Section Type | Categorize sections by a type. | Section |
| 23 | Space Index Type | Categorize space indexes by a type. | Space Index |
| 24 | Stakeholder Type | Categorize stakeholders by a type. | Stakeholder |
| 25 | Step Type | Categorize steps by a type. | Step |
| 26 | Subject Type | Categorize subjects by a type. | Subject |
| 27 | Tag Type | Categorize tags by a type. | Tag |
| 28 | Topic Type | A topic type is a semantic type of the topic. It helps to set the expectations of potential readers. | Topic |
| 29 | Version Type | Categorize versions by a type. | Version |
