Cuckoo Marans cockerel: will not produce either of the two kinds of color-based sexlinks (barred/not barred, gold/silver.)
With those crosses, you'll get lots of black chicks with white barring on their feathers.
The Rock and Orpington mothers will produce chicks with single combs, the Wyandotte mother may produce some rose comb chicks but may also produce some with single combs (depends on the genetics of the particular Wyandotte.)
With pure Cuckoo Marans or Barred Rocks, the males are lighter than the females. That will also happen when you cross those two breeds.
Cuckoo Marans crossed with not-barred chickens (Gold Laced Wyandotte, Buff Orpington) will produce dark-barred chicks of both genders. They may have some gold or red feathers as they grow up.
So light-barred chicks are certain to be roosters, and to have the Barred Rock mother. Dark-barred chicks could be either gender and could have any of the breeds as mother.