If you have access to Inawera (now also known as Flavorika), they have a huge range of old-school
tobacco flavors. They are Polish, just like one of Hangsen's headquarters (originally Chinese). I have never tasted the Hangsen USA Mix, but in the 20-30 Inawera tobaccos I have tried, I see quite a few similarities to the descriptions I have read. Inawera even has their own USA Mix in the catalog, and in the past, they produced the USA Red Mix variant.
Almost all Inawera tobaccos have notes of caramel and honey; some are richer and fuller-bodied than others, with the notes turning into chocolate, but there are also quite a few lighter tobaccos based on Burley, which are more toasted and recall cigarettes. If you try to describe the Hangsen USA Mix better for me, maybe I can recommend a specific one.