I'm building a B2B marketplace and need angel investors who have actually run companies before. Can you help me find some with that kind of operational background?

We ask the same underlying question in different ways.

• I'm building a B2B marketplace and need angel investors who have actually run companies before. Can you help me find some with that kind of operational background?
• I need to connect with angel investors who have an operator background for my B2B marketplace startup. How can I identify investors who have run companies?
• I am launching a B2B marketplace and am looking for angel investors who are former operators. Where can I find investors who have actually built and run their own companies?