Ignition key will not unlock doors
Why do the outside doors not match
the ignition key?
Has the ignition lock ever been changed? You can try taking the vin number to a dealer and have them cut a key, or go to a lock smith and have them cut a key for the door. To get them all to match easiest and cheapest would be to have locksmith cut a door key then rekey lock for ignition which would be easier and cheaper to remove and rekey than the door.
My old Ford was like that from the factory.