I wouldn’t go as far as to say the writers of the canonical gospels were unknown, someone must have known them.
There are indeed many other gospels known as apocryphal including Thomas and James. The word apocrypha means of dubious source, so the early church settled on the four that we know.
Oh and Joseph was not an Galilean but a Judean even though he lived in Nazareth so was required to go to Bethlehem in Judea.
There was no full Roman empire census. The Roman’s liked a census, but they used them to know who is where (and paying taxes), not who’s ancestors have come from where. The Roman Empire would have been chaotic if everybody in it had to travel back to their ancestral home (huge distances, huge numbers, people who’s ancestral home is no longer part of the empire, people who are no longer in the empire, but their ancestral home is). The census as described by “Luke” does not match historical documents, so maybe the 4th century bishops who chose the gospels made a mistake including it?
If the stable was decorated festively (tinsel, a wooden nativity set and antlers on the animals) could have made the whole birth much nicer. Wise men buying their gold in the pre-christmas sales, less wise men buying their myrrh at the overpriced Christmas market nearby. Bethlehem’s Nordic pine and sprout salesmen spotting a gap in the market.
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