The topic of the weekend seems to be the unity and diversity of the New Testament. See posts over the past couple of days by Michael Bird, James McGrath, and Ari Katz. Since I’m currently re-thinking my New Testament intro syllabus (although I’ve always wanted to emphasize the issues of diversity and unity in the NT), I thought I’d add my $0.02 in the form of the following “genealogical” table of the New Testament and the Apostolic Fathers.
You can also download the PDF if you like. The chart is mostly based on Raymond Brown’s The Churches the Apostles Left Behind (Paulist, 1984), although I’ve adjusted some of the dates to reflect my personal opinions on such matters. My dating conforms to Richard Bauckham’s conclusions in “Pseudo-Apostolic Letters” (JBL 107/3  469–94) about the possible pseudonymous nature of certain NT writings, based on literary rather than linguistic criteria. I would also recommend anyone interested in the unity and diversity of the New Testament to get hold of Martin Hengel’s Between Jesus and Paul (Fortress, 1983). See especially the first two essays in this volume, “Between Jesus and Paul: The ‘Hellenists,’ the ‘Seven,’ and Stephen (Acts 6.1-15; 7.54–8.3)” and “Christology and New Testament Chronology: A Problem in the History of Earliest Christianity,” for a compelling argument that many of the key features of Pauline theology can be dated to within only a very few years of the death of Jesus.