Seems there is a type O visa, but not sure about requirements as these seem very dynamic, so old info may not be relevant.
The 400,000 baht requirement not an issue at this time.
some say pictures of inside and outside of house taken by third party!
Googling it, shows many requirements that may or may not be currently valid, hence this post.
I’ve always been on non-type O retirement visa, never had a child support visa before.