Despite being called "non-denominational", non-denominational christians are a broad group of independent churches and spiritual movements that fall under the protestant tradition. They aren't a part of larger, more organized subsect of protestant like the baptists or lutherans, but their non-denominational-ism refers to not being a part of/neatly defined by an organized denomination of protestantism. Non-denominational Christianity can even be a nucleation point for new denominations, like the burgeoning evangelical movement that's become a driving force in the fall of the american empire