Which Anka breeds come in Vithövdad?

Club breed standards describe Vithövdad for the Myskand.

Anka pattern

Vithövdad

Muscovy duck pattern: a colored bird with a white head and upper neck (German 'weißkopf' in blue, brown, pearl gray and silver).

5 Anka breeds list Vithövdad. It is in a club standard for 5 breeds.

Breed	EE
Myskand	Standard (“blau-weißkopf; braun-weißkopf; perlgrau-weißkopf; silbergrau-weißkopf”)
MyskandBlå vithuvad	Standard (“blau-weißkopf”)
MyskandChokladbrun vithuvad	Standard (“braun-weißkopf”)
MyskandLavendel vithuvad	Standard (“perlgrau-weißkopf”)
MyskandSilvergrå vithuvad	Standard (“silbergrau-weißkopf”)