The sodas listed in the first post can be found in Texas. Dublin Dr.Pepper refers to the Dublin,Tx original bottling plant for Dr.Pepper.They do have a website,and I think they use cane sugar in it.
Jarritos and Penafiel are sodas from Mexico which are very popular around San Antonio,due to the high Hispanic population.Haven't tried any of them yet. We also here have Big Red,which has a bottling plant on the east side in Kirby,near the railroad yards.
Also,If you live around here, you can buy Shasta at the Family Dollar and General Dollar Stores.They used to sell it in the grocery stores here years ago.You can find it at Dollar Tree as well.
H.E.B. Grocery Stores, the mega south Texas chain based in San Antonio, has it's own brand of sodas called Hill Country Fare,named so because the chain started in Kerrville, in the Texas Hill Country back in the early 1900s. Their sodas aren't bad, but i don't know who they have a contract with to produce the soda. We do have Barq's here, and i have seen NeHi's Grape and Orange Crush at Walmart as well as Frosty Rootbeer. I think I even saw Dad's Rootbeer too at Walmart.Maybe Frosty changed their formula, but it didn't tast as good to me as when I was a kid.
I recall my dad mentioning a soda called Grandpa Graf's Rootbeer, that was around years ago in Milwaukee.But that was back in the 1930s and 40s.