Dexron III is still "dino", Dexron VI is syn. ATF+4 is part-syn, I believe, but not full-syn?
Chrysler changed its prior Typa A Suffix A fluid to the first Dexron in 1967 or 1968.
Dexron III is now terned "Type III" by ACDelco. On other brands, it is "Multi-Make", but dialogue on the bottle...