I would first find out what companies service your specific area, and stick to companies with a long history of servicing your community. Secondly I would call each one and ask to speak with an agent, not a broker, and ask if they are issue age. BCBS is issue age and Colonial Penn is issue age, just Mutual of Omaha is Attained age Rated and United Healthcare (AARP) is community rated, although if you ever move you will be re rated not only to the health of the community your moving to, but also the new age. USAA is issue age rated, but you have to be a member to seek their benefits, and they push you to bundle services. Colonial Penn you can take anywhere in the country and not be re-rated, BCBS you can take anywhere in your state and not be re-rated.
Once again, see what's available in your area, and speak with an actual Agent who has to be honest to protect his or her license.

P.S- Not all companies offer the G plan either, so just ask the Agent.