Did they believe Jesus of Nazareth was God?
There are many handwritten portions of the New Testament written in the first few centuries after Jesus was crucified. They were often written on an ancient type of paper called papyrus. As the original language of the New Testament was Greek, then these manuscripts can be referred to as Greek papyrus texts. They are often labelled with a Gregory-Aland number (e.g. P52) and a LDAB ID number (e.g 2774 for P52).
Echoes of Jesus: Does the New Testament Reflect What He Said? (Second edition) describes many of the important early Greek papyrus manuscripts, and focuses on those that contain all or part of the four Gospels. Chapter 8 contains a table that provides valuable information about a selection of Greek manuscripts from the first four centuries. For example it notes that P104 which contains a portion of chapter 21 of The Gospel of Matthew was written sometime between 100 AD and 200 AD.