What charitable organization is “guided by the belief that every life has equal value”, according to its website, and has donated more than $45.5 billion since it was founded in 2000?

In 2017, CNN compiled its list of the 50 greatest American food dishes, with Thanksgiving dinner, hot dogs, and the cheeseburger ranking in the top five along with two other dishes. Name one of those two dishes, both of which are types of sandwiches.