Can a father obtain a Non-O visa in Thailand if he is not married and has a child born in Thailand?

The inquiry relates to a father seeking to obtain a Non-O visa in Thailand. Although not married, he has a child born in Thailand and his partner holds a work visa. According to responses, he may be eligible for a 90-day Non-O visa based on being the father of a foreign child, which requires specific documentation and having 500,000 baht in a Thai bank account in his name, transferred from abroad. It is advised that he visit the immigration office for further guidance and to obtain the necessary documentation.