Here's a pic of some Yantar ground cherries. The flavor is very similar to Aunt Molley's, perhaps a bit "cleaner" - hardly a hint of that peculiar tomatillo-ish background flavor. At least as sweet as Aunt Molly's too.
The fruits are a bit smaller and paler yellow, but these minor differences could be attributed to confining these to 1-gallon pots.
Overall, Yantar and Aunt Molley's are difficult to distinguish. Next year I'll have a chance to grow them side-by-side to get more experience about how they differ.
I've kept the two Yantar plants well separated from all other Physalis species, hoping to reduce the risk of cross-pollination.
My Inca Berry plants are still not producing much. Perhaps they need to be grown under plastic in this area.