Timothy of Constantinople

He wrote a treatise in Greek on Christian heresies from a Chalcedonian perspective, On Those Who Enter the Church, or On the Reception of Heretics.

[2] In the first class, Timothy lists Manichaeans, Tascodrugites, Ebionites, Valentinians, Basilideans, Montanists, Eunomians, Paulianists, Photinians, Marcellians, Sabellians, Simonians, Menandrians, Cerinthians, Saturninians, Carpocratians, Marcosians, Apelleasts, Theodotians, Elcesaites, Nepotians, Marcionites, Artotyrites, Saccophori, Apotactics, Encratites, Hydroparastatae, Nicolaitans, Melchisedechites, Pelagians and Caelestians.

[4] Theodore the Studite, taking a more practical stance, lists only the Manichaeans, Tascodrugites and Marcionites in his first class.

[5] His list of Marcianists includes Messalians, Euchites, Enthusiasts, Choreuts, Lampetians, Adelphians and Eustathians.

[8] Several sects mentioned by Timothy, such as the Melchisedechites, he describes as having Jewish practices, including sabbatarianism, celebration of new moons and delaying baptism.