Who were the first two people to see Christ after He rose from the dead?

In 1 Corinthians, Paul says that Jesus was seen by Cephas (Peter), then the twelve, then by more than 500, most of whom were still alive, then by James and all the apostles, and finally by himself. In this passage, Paul implies that the appearances were all of the same nature, with no suggestion that the appearances to Cephas, the twelve, James or the apostles were somehow more real than the spiritual appearance he experienced. Certainly Paul was claiming to have seen Jesus after his ascension, but he also seems to have believed that the others only saw Jesus after his ascension, as well.

Acts of the Apostles also describes Stephen as claiming to see both Jesus and God seated in heaven above him.