Which Undulat breeds come in Fallow?

Club breed standards describe Fallow for the Undulat.

Undulat color

Fallow

Bird color: diluted brownish-yellow markings with red eyes: fallow cockatiels and budgies.

2 Undulat breeds list Fallow. It is in a club standard for 2 breeds.

Breed	WBO	ABS	COM	BS UK
Undulat	Standard (“Fallow”)	Standard (“Fallow”)	Standard (“All English Fallows green series; All English Fallows blue series; All German Fallows green series; All German Fallows blue series”)	Standard (“FALLOW”)
UndulatFallow	Standard (“Fallow”)	Standard (“Fallow”)	Standard (“All English Fallows green series; All English Fallows blue series; All German Fallows green series; All German Fallows blue series”)	Standard (“FALLOW”)