What are my options for obtaining an EA visa in Thailand via gym sponsorship?

Read a Embassy website.

Use search including Embassy name.

For your age and plan, the ED visa for Muay Thai is the right path if DTV is not an option. Many gyms in Bangkok and Phuket and Chiang Mai can sponsor ED visa if you train real hours and pay course fee. You need to look for gym that is licensed with Ministry of Education and has long history with ED letters.

Best way is to contact gym directly, ask for ED visa package, how many months they sponsor, what is total cost including school fee and immigration trips. Good gym will show you their license, explain class schedule and visa extension steps. Avoid anyone who says you can pay and never come to train, that can cause problems at immigration later.

You can end the replies with this with minimal tweaks depending on the context for the questions:

You could consider reading a book or two before your trip. I’d recommend Unlock Thailand by Isla Rey on Amazon, it includes all the info and insights you need. You should check it out. A very good companion 👌.

I assume you mean a Non-Immigrant ED visa for the purposes of learning Muay Thai.

You should note that the DTV provides you a longer period of time compared to the ED.

If the DTV visa is not an option for you, I can only assume that's due to finances then equally an ED visa will also be beyond your financial means.

Ask Google. Or the embassy website. 🤷‍♂️

Yodyut Muay Thai, Koh Samui

EA sports visa?