I could not find a definitive link to any particular school of early Christianity for the following . The following were certainly widely read by early Christians.
They are as follows:
Prayer of the Apostle Paul
The Secret Book of James
On the Origin of the World
Exegesis on the Soul
Eugnostos the Blessed
The Wisdom of Jesus Christ
Revelation of Paul
First Revelation of James
Second Revelation of James
They are as follows:
Prayer of the Apostle Paul
The Secret Book of James
On the Origin of the World
Exegesis on the Soul
Eugnostos the Blessed
The Wisdom of Jesus Christ
Revelation of Paul
First Revelation of James
Second Revelation of James
The Acts of Peter and the Twelve Apostles
Thunder
Authoritative Discourse
The Concept of our Great Power
Excerpts from Platos Republic
The Paraphrase of Shem
The Second discourse of the Great Seth
Revelation of Peter
Teachings of Silvanus
Letter of Peter to Philip
The Testimony of Truth
Interpretation of Knowledge
Hypsiphrone
The Sentences of Sextus
The Act of Peter - from the Berlin Gnostic Codex
Thunder
Authoritative Discourse
The Concept of our Great Power
Excerpts from Platos Republic
The Paraphrase of Shem
The Second discourse of the Great Seth
Revelation of Peter
Teachings of Silvanus
Letter of Peter to Philip
The Testimony of Truth
Interpretation of Knowledge
Hypsiphrone
The Sentences of Sextus
The Act of Peter - from the Berlin Gnostic Codex