Ask HN: Any Bay Area Contracting Co-Ops or Job Shops?

Is anyone aware of good shell companies or worker cooperatives to satisfy purchasing controls at large companies? Specifically, the problem I am encountering is companies who require multiple revenue streams for consultants to avoid worker misclassification liability.

I am looking for a group that operates on a eat what you kill basis with low overhead. Ideally consulting fees are simply passed through to a sole proprietorship.

Does this exist? Any recommendations?