Here's a list of actual scholarship you should feel free to check out on your own time. Now, this is only includes those who argue that Thomas is dependent on the synoptics. It does not include the many more (Jeremias, Ehrman, etc) who argue that Thomas is independent but later.
In fact, even many of those in the Jesus seminar who believe that part or most of thomas predates the synoptics do not believe that the document as we have it does. But here is the list. I would start with the article by Tuckett is I were you.
Blomberg, Craig L. “Tradition and Redaction in the Parables of the Gospel of Thomas.” Perspectives. The Jesus Tradition Outside the Gospels. 177-205.
Chilton, Bruce. “The Gospel According to Thomas as a Souce of Jesus’ Teachings” Gospel Perspectives. The Jesus Tradition Outside the Gospels. 155-75.
Dehandschutter, Boudewijn. “L’Évangile selon Thomas: témoin d’une tradition prélucanienne?” Peeters, 1989.
Dunn, J. D. G. Christianity in the Making (Vol. 1: Jesus Remembered). Grand Rapids: W. B. Eerdmans Publishing Co., 2003.
Fieger, Miachael. Das Thomasevangelium. Neutestamentliche Abhandlungen 22 Münster: Aschendorff, 1991.
Gärtner, Bertil. The Theology of the Gospel According to Thomas. New York: Harber & Brothers, 1961.
Grant, Robert M. Gnosticism and Early Christinity. New York: Harper & Row, 1966
Haechen, Ernst. Die Botschaft des Thomas-Evangeliums. Berlin: A Töpelmann, 1961.
Meier, J. P. A Marginal Jew (Vol. I: The roots of the Problem). The Anchor B ible Reference Library. New York: Doubleday, 1991.
Rudolph, Kurt. Gnosis. The Nature and History of Gnosticism. San Fransisco: Harper & Row, 1987.
Schrage, Wolfgang. Das Verhältnis des Thomas-Evangeliums zur synoptischen Tradition und zu den koptischen Evangelienübersetzungen. Beihefte zur Zeitschrift für die neutestamentliche Wissenschaft 29, Berlin, Töpelmann, 1964.
Sevrin, Jean-Marie. “Un groupement de trois paraboles contre les richesses dans l'Evangile selon Thomas EvTh 63, 64, 65” in J. Derlorme (ed.) Les paraboles évangéliques: Perspectives nouvelles (Paris: Cerf, 1989). 425-39
Tuckett, Christopher. “Thomas and the Synoptics.” Novum Testamentum 30 (1988) 132-57.
Turner, H. E. W. “The Gospel of Thomas: Its History, Transmission and Sources,” in Hugh Montefiore and H. E. W. Turner’s Thomas and the Evangilists (Studies in Biblical Theology 35, London: SCM, 1962).
Wright, N. T. Jesus and the Victory of God. Minneapolis: Fortress Press, 1996.