I am really curious to find out what specific features define the Spanish spoken in various parts of Mexico. Maybe not every single state but a more or less broad classification of Mexican dialects. I am looking for something similar to how American English is broadly classified into Southern, Yankee, Appalachian, Midwest, Valleyspeak, etc.
There are a lot of dialects in Mexico as you can see here, but, according to your request you are looking for something more informal. So, based on this, and based on my experience as well, I can tell you that there are 4 main classifications: