What are the varieties of information classification?

Example

By source (where from)

Internal, external, primary, secondary

By formality\nature

Qualitative, quantitative, formal, informal

By level (within the organisation)

Strategic, tactical, operational

By time (how up-to-date it is)

Historic, recent, present

By frequency (how often it is used)

Monthly, annually

By use (within the organisation)

Planning, control, decision making

By format (how it is presented)

Written, oral, visual