Clara Goula is a oldie, but I don't know of another white that is any prettier. This one grows at the edge of our upper pond and has been there for many years.
Black Gamecock is another oldie that we've grown for years. It is quite dark and velvety and unlike any others I know. This was probably the first one we grew and we now have moved pieces of it to several different locations. More will be blooming soon, but I wanted to continue with irises this morning before moving on to something else. Weather kept me from posting for the past few days since the storms turned off our electricity and it just came back on mid-day yesterday. Thankfully most of the time it was cool enough here that we didn't need to keep the fan running. The few days before were so hot we really would have been miserable.