I'm almost embarrassed for you.
You are twisted up in terminology.
If I bar chat with random guy and he states "I live here on retirement visa".
I don't correct him.
What he most likely means is ..
"I live in Thailand on extensions based on retirement"
Those extensions could be from a non O retirement or non O-A.
Certainly not visa extension.
Visas cannot be extended.
The permission of stay can be extended. Very different.
Thai immigration even use terms such as "Retirement visa extension"
No such thing but that has been pointed out by several knowledgeable posters and I posted earlier you are playing games.
If you have a genuine question such as which form to use or help with obtaining a non O and subsequent extensions based on retirement or marriage then by all means ask.
You will be given sound advice.
Playing the silly card does not help.
Just making yourself look ridiculous.