Catholics and Protestants; at least they don't 'fight' much among each other anymore because 'faith' in one 'denomination' or the other is like choosing the Mets over the Giants. Muslim theology still makes 'their faith' a life or death matter with 'blood atonement' being a part of the package like it was among the Mormons---another Christian 'sect' or 'cult group' that has assumptions as silly as Muslim assumptions.