Lazarus is also more likely better educated than John the apostle, so he was more qualified to pen the fourth gospel.
John is described in Acts as “unlearned and ignorant.” That might be a bit of an exaggeration, but it might not be too far from the truth since they were by profession fishermen. There was no need for them to be educated and learned.
Act 4:13 Now when they saw the boldness of Peter and John, and perceived that they were unlearned and ignorant men, they marvelled; and they took knowledge of them, that they had been with Jesus.
According to the secret gospel of Mark, Lazarus was rich. “And going out of the tomb they came into the house of the youth, for he was rich.”
Lazarus was also buried in a cave with a stone (similar to Jesus), which would indicate having some money. Mary also anointed Jesus’ feet with ointment worth one year’s wages. Finally, Lazarus was to take care of Jesus’ mother, which would also indicate he had some financial stability.
So, if Lazarus was in an upper-income household, he was also likely to be well educated and more likely than John to write the fourth gospel.