This list consists of people for whom we have documented evidence. It is incomplete, and for some groups the evidence is indirect or fragmentary. We do not necessarily know about or endorse all the doctrines of the people included (after the apostles). It appears that the people on this list affirmed the absolute oneness of God and the full deity of Jesus Christ and that they were non-trinitarian (by orthodox trinitarian standards).
| 1 | Apostolic church |
| 2 | Post-apostolic leaders, including Clement of Rome, Ignatius, Polycarp; some Montanists; modalists |
| 3 | Modalists, including Noetus, Praxeas, Epigonus, Cleomenes, Sabellius; probably the Roman bishops Victor, Callistus, and Zephyrinus; Commodian, probably a bishop in North Africa; "the majority of believers" in Tertullian's day |
| 4 | Marcellus, bishop of Ancyra, and followers; believers in Antioch, probably including Eustathius, the bishop there; Priscillian and followers; Sabellians |
| 5-15 | Sabellians, Priscillianists; possibly other heretics such as Euchites and Bogomils; some theologians such as Peter Abelard, William of Conches, and Gilbert de la Porree |
| 16 | Michael Servetus, some antitrinitarians, some Anabaptists |
| 17 | Some English Baptists; George Fox, William Penn, and other early Quakers |
| 18 | Emmanuel Swedenborg, Isaac Watts |
| 19 | Barton Stone (Christian), some New England Congregationalists, John Miller (Presbyterian), John Clowes (Anglican), David Bailey, anonymous English author |
| 20 | Oneness (Apostolic) Pentecostals, some Charismatics, some Sabbatarians, some Baptists including Frank Stagg, some Neo-Orthodox theologians |
