The Valve model is the one you want to read. This is one of the most effective culture builders ever created. My first startup had a similar approach although we called it "chaos".
"That’s why Valve is flat. It’s our shorthand way of saying
that we don’t have any management, and nobody “reports
to” anybody else. We do have a founder/president, but
even he isn’t your manager. This company is yours to
steer-toward opportunities and away from risks. You have
the power to green-light projects. You have the power to