Small businesses can compare off-exchange small-group plans through a broker or...

https://super-wiki.win/index.php/How_to_Evaluate_Network_Limitations_Before_Joining_an_Association_Plan

Small businesses can compare off-exchange small-group plans through a broker or directly with insurers; some may also consider an HRA or association plan. Before comparing premiums, check that employees’ doctors and hospitals are in each plan’s network.