I am asked often to help an organization set up their initial Document Type structure.  While every customer is different, I suggest the following listing with Groups and Document Types.

Accounts

Account Communications

Contracts

Quotes / Proposals

Support Documents

Human Resources

Application Forms for Hiring

Forms for Benefits

Policies

Staff Reviews

Products

Brochures

Fact Sheets

Manuals

Pricing

Product KnowledgeBase

Quality Management

Customer Feedback

Employee Suggestions

Policies

Web Site

Start Pages