Re: RHS registration:I over-inferred from the requirement that the plant must have bloomed to be registered. The only requirement is for a description.
I believe the spotting in Golden Buddha is almost entirely from Spica (fasciata x lueddemaniana), although there is something in the background of Cher Ann that breaks up the bars into spots, it seems.
For my own education, I am going to further investigate this with some Phal. breeder types I know.