I've done some cleaning for the easy ones, but if someone could help identifying (or guessing) the 13 ones without mk/year, that would help
https://www.imcdb.org/vehicles.php?resultsStyle=asImages&sortBy=0&makeMatch=2&make=- ford&modelMatch=2&model=transit&modelInclModel=on
Same for these 3 first ambulances without mk:
https://www.imcdb.org/vehicles.php?resultsStyle=asImages&sortBy=0&make=Ford&model=- Transit+Ambulance&modelMatch=1&modelInclModel=on