@Richard *****
there are more. If you go to the e-Visa site
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and apply for a new one, after selecting the Non-Immigrant type they ask to choose a purpose from a long list where I have usually selected "To stay with Thai family residing in Thailand". But from now on I think I will take the "Retirement" but it doesn't make a big difference since both are 90 days single entry (before there was a one year multiple entry but seems like they discontinued that one)