The perfect antidote for fascination with the "vibrant" Gnostic Gospels would be to actually read the silly things. The Nag Hammadi Library ed. James Robinson handily collects the manuscripts found in Egypt in 1945. These include the Gospel of Philip and the Gospel of Mary which Dan Brown cites and the Gospel of Thomas which he doesn't.
Da Vinci Code fans who actually persevere through the 475 pages of the collection are likely to wind up with throbbing headaches or even the beginnings of brainrot. But they will know not a particle of new information about the "real" Jesus because he isn't here.