Red Delicious
The Red Delicious is a clone of apple cultigen, now comprising more than 50 cultivars, first recognized in Madison County, Iowa, in 1880. According to the US Apple Association website, it is one of the fifteen most popular apple cultivars in the United States.
Cortland (apple)
The original Cortland variety, introduced in 1915 by the New York State Agricultural Experiment Station, produced apples which were 20–30% red, and was not patented. Since then, several sports have been identified and patented: