A long time ago, Mexico removed the FM1, FM2, or FM3 types of visas. They now only have permanent or temporary Mexico resident visa types. This absolutely means that you can’t apply for a permanent visa the first time. You have to go through 4 years of temporary resident visa until you are eligible for a permanent one. I did hear about some friends from Los Angeles, CA who were granted a permanent visa right away. It’s a case to case basis and it all depends on the consulate you are applying in.