Various Christian denominations are nontrinitarian and reject the doctrine of the Trinity. While in the minority, the two largest nontrinitarian denominations are The Church of Christ of Latter-day Saints (Mormons) and Jehovah’s Witnesses.
Jehovah’s Witnesses consider Jesus to have had a beginning and to be a direct creation of God. They do not believe that the Holy Spirit is a person but God’s active force. Mormonism teaches that God created Christ and that the Godhead is a divine council of the three individual gods. This is a form of tritheism rather than the Biblical monotheistic teaching.