I think a lot of the beef with "typical Americans" is with your last type. If you get off the coasts you can find a whole bunch of Americans who are seemingly proud of not knowing anything about the rest of the world.
The main and important exception to this is of course African American's.
No, actually you won't. Most of America's population lives within two hundred miles of it's coastlines. This group of proudly ignorant people is therefore much smaller than they're stereotypically thought of being.
It is because of these trips that I no longer worry about global overpopulation and just look at people quizzically when they start talking about the topic.
I can recount some anecdotes that fulfill the stereotype if you'd like.