Small businesses can shop off-exchange through a broker, buy a small-group plan...

https://mega-wiki.win/index.php/Health_Insurance_for_a_Company_with_30_Employees:_Off-Exchange_Options

Small businesses can shop off-exchange through a broker, buy a small-group plan directly from a carrier, or explore HRA options. Before comparing premiums, check that employees’ doctors and hospitals are in-network; provider access can vary by plan.