Or,
Matthew wrote his gospel in Hebrew (some word plays and puns work in Hebrew, but not Aramaic).
Mark’s work was in Hebrew also (see Carmignac, Birth of the Synoptics) but translated into Latin while he was with Peter in Rome; and then finished after Peter’s death with a Greek version (perhaps in Alexandria)
Luke — ditto, using Hebrew sources, except for the introductory words (and using Mary as a source for the early portions)
John — ditto (See, The Hebrew Christ, by Tresmontant)
-and written very early
John was written much later. This is not discussing him. Just the synoptic authors, Matthew, Mark, Luke.
Mark written in the 70s
Matthew written ater the 70s because it tells of the destruction of Jerusalem
Luke was written in the 80s or 90s
Mark written in the 70s
Matthew written after the 70s because it tells of the destruction of Jerusalem
Luke was written in the 80s or 90s
Please provide a link to the facsimiles of the extant Hebrew MSS for your conjecture.