Kohler has a new, "traditional look" toilet with WaterSense labeling.
The Tresham K-3950 with 1.28 GPF, with comfort height and elongated bowl.
I installed one in a 1920's Seattle home to see how it works and looks. The homeowners (Sue's sister) will be reporting back on how it's working for them.
Kohler Tresham K-3950
Front end view
Looking inside the tank of the Tresham.
The trapway of the Tresham