“VATICAN CITY, June 23 (Reuters) - The Vatican on Tuesday reaffirmed a long-standing rule that only an ordained priest or deacon can give a sermon at a Catholic mass, rejecting a request from German bishops to broaden the practice and allow sermons by women or other laypeople.”


Or not: https://factually.co/fact-checks/religion/gospels-where-written-by-whom-88e1e4
Are the gospels even considered part of the catholic canon?
they are different in styles because they are different people
Yes, they are
That does not answer these discrepancies:
They were written miles and years apart from each other.