What is a AM Best rate AX for an insurance company?

There is no such rating given by A.M.Best Company. They have an A+, A, A-, etc. but no Ax rating. You can look up ratings yourself at there website. As a matter of full disclosure, I own and operate a small Independent Insurance Agency in Georgia and have for 22 years. I also was an agent for a direct writer insurance company for 3 years prior.