The idea of putting together such list is noble, though. It just need more consistency.
Let me know if you see an app that logically should not be in one of the categories. This is curated by hand, so errors may happen.
To me, the sequence that comes to mind is: Sync Comms > Aggregation of unstructured data/documents/media > Collaboration (whiteboarding, sketching, mind-mapping etc.) > Administration > Project Management > Development > Security, Monitoring and Reporting
EDIT: That said, I see what they're getting at with putting Preface into project management. "Preface is a freelance management platform, built for remote teams."