Five??? Thats funny. Just open your phone book and you tell me how many different denominations there are. There are more than five different major categories of Protestants, not to mention the endless schisms within each of them; Anglicans, Lutherans, Methodists, Calvinist, Congregationalist, Presbyterian, Reformed, Baptist, Anabaptist, Zwingalian, Adventist, Quakers, Amish, Pietists, Evangelical, Unitarians, Pentecostals, Mormons, Jehovah Witness, Episcopalians, Shakers, and that doesnt include the hundreds of independent, non-aligned store front entities.
Many of the "Churches" listed don't consider themselves "Protestant". It would require a lunatic standard to claim they are so.