Which Budgerigar breeds come in Greywing?

Club breed standards describe Greywing for the budgerigar.

Budgerigar pattern

Greywing

Budgie mutation: gray wing markings instead of black, the body color diluted by about half.

2 Budgerigar breeds list Greywing. It is in a club standard for 2 breeds.

Breed	WBO	ABS	COM	BS UK
budgerigar	Standard (“Greywing”)	Standard (“Greywing”)	Standard (“All Greywings of the Green series; All Greywings of the Blue series (inc. Yellowfaces)”)	Standard (“GREYWING”)
budgerigarGraywing	Standard (“Greywing”)	Standard (“Greywing”)	Standard (“All Greywings of the Green series; All Greywings of the Blue series (inc. Yellowfaces)”)	Standard (“GREYWING”)