Some incorrect things like 1986 being Stanley's first appearance. Also Donkey Kong Junior has had a very limited appearance. In fact it might be worse than Stanley's. There is a character called Diddy Kong, but that is not Junior. Diddy completely replaces him.
Having said that I did not know Greenhouse had the character referred to as Stanley. That is cool information to know.
edit: nevermind, it appears that Donkey Kong Junior did have a few games where he had a significant role. My bad.