If you’re talking about the most popular or common thing, call it predominant. If the predominant feeling in a neighborhood is that pizza is the best food, the result might be pizzerias being the predominant type of restaurant there.
The adjective predominant describes a person or thing with great power or influence, or something that is prevalent. It comes from the Latin prefix prae-, “before,” and dominari, “to rule.” For example, because so many people like hip-hop, it might be the predominant music heard at a school dance. And that neighborhood with all the pizzerias? Teenagers are the predominant customers, and pepperoni is the predominant topping.