Theophylact of Ohrid

"To draw away disciples after themselves." The goal of heretics is to try to attract people not to the Lord, but to themselves, in order to flatter their own vanity, so that those attracted by them would bear the name of one heretic or another, as, for example, from Manes — the Manichaeans, from Arius — the Arians. This is what "to draw away disciples after themselves" means. Therefore, tempering their zeal even earlier, Paul both reproaches and forgives those who said: "I am of Paul"; "I am of Apollos" (1 Cor. 1:12).

Commentary on Acts ↗

Hegesippus

From these men also come the Menandrianists, and the Marcionists, and the Carpocratians, and the Valentinians, and the Basilidians, and the Saturnilians. Each of these leaders in his own private and distinct capacity brought in his own private opinion. From these have come false Christs, false prophets, false apostles—men who have split up the one Church into parts through their corrupting doctrines, uttered in disparagement of God and of His Christ

Fragments from His Five Books of Commentaries on the Acts of the Church. ↗

Bede

And from among yourselves will arise men speaking perverse things. Concerning these, John also says: They went out from us, but they were not of us (1 John II).

Commentary on Acts ↗