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

https://rileysexcellentnews.readspirex.com/posts/what-does-employer-contribution-mean-in-a-group-health-plan

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.