What are the top two red grape varieties of Germany?

The top two red grape varieties of Germany are indeed Spätburgunder and Dornfelder. Spätburgunder, known as Pinot Noir in other regions, is the most widely planted red grape in Germany and is highly regarded for producing high-quality wines that reflect the unique terroir of the country's wine regions. It is known for its elegant flavors and ability to express characteristics of where it’s grown.

Dornfelder, on the other hand, is a more modern variety that has gained popularity due to its vibrant color, rich fruit flavors, and versatility. It is often used for both varietal wines and blends, appealing to a wide range of palates.

The presence of other grape varieties mentioned in the options highlights their significance in different wine regions but does not represent Germany's top red varietals. Thus, the focus on Spätburgunder and Dornfelder reflects the specific prominence of these grapes within the context of German wine production.