You should be able to find Mexican Pepsi in Texas. That should have real sugar. I thought one of the Dr. Pepper bottlers in Texas never went to HCFS. I made sure to have a Dr. Pepper when driving through El Paso to test the claim that the Dr. Pepper in TX is different and better. It had more of a vanilla taste to me.
After promoting Dublin Dr Pepper and promoting it , Corporate changed their mind and decided to run the bottler out of business. They engaged in lawfare against them for selling out of their franchise area (which Corporate had promoted, as I said) and buried the small business in legal fees. The bottler finally threw in the towel and surrendered the franchise. Corporate then started selling Dr Pepper with real sugar (overpriced bottles and fairly priced 2 liter when you can find it in stores). I don’t think it’s as good as the Dublin product, but I buy it despite considering Dr Pepper management to be immoral low life scum, and their counsel to be of questionable ethics for abusing the legal system.
It’s Mexican Coke, and it is widely available (if overpriced) in Texas. The Pepsi with sugar is locally produced, but again they shrank the cans and jacked up the price. For a while Pepsi was offering some other products with sugar, but they dropped those pretty quickly.