I've been thinking about tasting the different Buffalo Trace Mash Bills side by side to see and appreciate how the whiskies change from the same beginning. I've done a few searches and this is what I can come up with.

Mash Bill 1 - Old Charter, Eagle Rare, George T. Stagg, Buffalo Trace
Mash Bill 2 - Ancient Age, Elmer T. Lee, Rock Hill Farms, Hancock Reserve, Blantons

Now my guess is it is safe to say that the same Wheat Mash Bill would be used for Wellers and the Van Winkle products? I'm also assuming that the two Sazeracs would also share the same Rye Mash Bill as well.

Any additional information would be welcomed as any input from anyone else who has done this.