It may no longer be true, but several decades ago it was possible to find sugar-sweetened soft drinks in the US by looking for kosher labels.
(I have a coke can next to me as I type; it is sugar-sweetened)
(I have a coke can next to me as I type; it is sugar-sweetened)
Pepsi was selling "Dr Pepper Heritage" (green/yellow cans) and "Pepsi Throwback" for a few years around a decade ago. It was pretty widely available at gas stations in the midwest, although 12-packs of the Dr Pepper was not very common.
"Mexican coke" is still made with real sugar. Costco has it in glass bottles pretty consistently, and sometimes has pepsi in glass bottles with real sugar as well (although the pepsi isn't labeled like it's a Mexico product).
They have glass bottles of pepsi and coke around Kansas City in Mexican grocery stores as well as, oddly enough, the gas stations on the Kansas Turnpike. Half liter bottles are more common in the Mexican stores, but wal-mart often has 12 oz bottles of Mexican coke in the Hispanic section.
* just checked all the cans in my house. Six-packs in the fridge from the grocery came from the EU, and have sugar. Two-fours in the basement from the discounter came from some nordic-speaking country, and have sugar.