So here is my pitch for my favorite way to eat, so forgive me if it doesn't fit the topic. I LOVE taquerias, they are a staple around small rural towns in KY where I grew up. With the migrant worker boom on farms throughout the late 80's and early 90's when tobacco was still king, I would go all the time, and still do. Using what rudimentary spanish I know I can definitely order my weight in taco gold anywhere. Though they may not be truly of a particular region, they are a great part of the Central American diaspara here in Kentucky. Some even will have cool hints of the regional flavor you desire if you look right. The Mi Preferida grocery store in Eastland Shopping Center has a great little taco joint in the back. They grill peppers into crumpled sweet charred goodness. They are so sweet that the heat can really take you by surprise so approach with caution. They also have the most extras you will see in any of the local taquerias. Pico de gallo, grilled onions, even ceviche. Taqueria Mexicana I on Preston has the most diverse taco menu I have seen in town. Chicharron, la lengua, even salchicha. If you are brave enough to eat Mexican seafood they have a good Salpicon Del Marisco, and camarrones that I dig. If you really want to go all in on street food you can't get better than Las Gorditas food truck in the Eastland Shopping Center as well. And when you got nothing better to do and you want to see where I grew up and what attracted me to Mexican food as a kid, Simpsonville Flea Market has the best carne asada taco on a simple toasted El Milagro corn tortilla, and the best salsa roja in the biz.
Ok rant over. Sorry
I have to second Mayan as the most like your request. I LOVE Mayan, and Chef Bruce, his brother Willy, and sister-in-law Ann are some of the best restaurateurs in town, on top of having spectacular food.