Corn tends to lose its flavors over time evolving into a general ‘sweetness’. The flavor impact of smaller grains as they age would depend on their type, relative proportions (ratios?) to each other and the overall grain bill as well as many other factors.If you read through (even established) commercial distilleries’ tests of experimental grain bills, they are at a loss for definitive final flavor profiles, relying instead on a history of changes to make their hopeful projections. On the other hand, Four Roses famously produces distinctly different bourbon expressions using different yeasts on the same grain bill so yeasts play a role as does oak characteristics on final flavor.With so many influences I believe its going to be an uphill challenge predicting a final flavor profile from your newmake. If there was such a flavor wheel I would think it would be bouncing around the Forum. With so many different flavor perceptions, personal experience will be your best guide. Too bad it takes so long to discover what your newmake tastes like after a long rest on oak. That said, a potential approach (what I do) is to taste the expression, review its grain bill (if available) and even get feedback from experienced whiskey folks for their assessments. I love opening a bottle to reviews by these guys , who tend to share the grain bill of what they’re sampling. ‘Course your distillery is gonna be different, but hey, getting even a general comparison of whats in the bottle is a great reason to pour a few drams.“Always carry a flagon of whiskey in case of snakebite, and furthermore, always carry a small snake.”- W.C. Fields My EZ Solder Shotgun My Steam Rig and Manometer