I think there are several positive stereotypes of African Americans. I would include musical ability (rhythm and soul), ability to dance, food (soul food), and athletic ability.
The trouble with these sorts of stereotypes is that they set up unrealistic expectations. There are many African Americans who aren't musical, don't have a sense of rhythm, eschew "soul food", and have limited athletic ability.
The use of stereotypes is a part of human nature and is an important trait for our functioning in society.
That doesn't mean it's good.
Suspicion of 'people who don't look like us' is part of human nature as well.
Stereotype provide set templates for us to act in a way that is expected to other people in our environment.
You're inventing your own definition; let's look at a dictionary: "noun: a conventional, formulaic, and oversimplified conception, opinion, or image."
This is the way that social interactions act smoothly... without needing to dive deeply into the thoughts and needs of every person we encounter.
Why not just accept people as individuals and grant them respect rather than automatically fit them into some societal box which might not be comfortable for them? For instance, izzy's example:
Other black stereotypes are jazz musicians, either impoverished, addicted or both, but always talented.
Black musicians in the classical field encounter this stereotype all the time, "What, you play a violin?
" It gets old.
You couldn't function socially without them.
You're referring to manners, social graces, and etiquette, not stereotypes.