A small business can shop off-exchange through a broker, buy a small-group plan...

https://blogfreely.net/neasalnfbo/how-do-i-get-small-business-health-insurance-without-the-marketplace

A small business can shop off-exchange through a broker, buy a small-group plan directly from a carrier, or consider an HRA for individual coverage. Before comparing premiums, check whether employees’ doctors and preferred hospitals are in-network.