When I started brewing 25 years ago, we really didn't know what was in Amber or Dark Extract. Now, They have Munich, Vienna, Rye, and even light extract with 30% flaked maize listed. I'm trying right now side by side comparisons of all extract with a steeping grain vs all grainortwo like a Dos Equis Ambar clone(100% Vienna Malt Extract with Malt Extract that has 30% flaked maize) Or a Yuengling clone with some Munich, Vienna and Extract with 30% flaked maize. Even a Weizenbock. I agree that amber and dark extracts are still a crap shoot on what malts they use, but some of these new extracts are worth trying to make a puzzle pieces fit for some beer styles.