Provider List / Gold Standard?

Is there a website or directory of sorts that lists places that provide TMS? I'm near St. Louis, Missouri, so surely there are many places, but Google is consumed by the sponsored places so it's not showing many besides Greenbrook, and I don't want to go there.

Also, is there a gold standard as far as TMS machines or methods? Is deep TMS really better than regular TMS? I'm so afraid of it not working, since I have treatment resistant depression and even ketamine therapy and microdosing psilocybin didn't work. This is my last resort and I'm likely paying out of pocket so have one chance at it. Thank you!