maybe the lesser was a platty daddy / "true" lesser platinum / lesser het daddy / whatever they call them.

i mean a lesser with that additional very weak brightening gene from the BEL complex.

then all offspring either gets the lesser gene, or that "het daddy" gene.

so yes, group pictures of all 5 offspring and pictures of the parents will help.


but then, its also possible that its all within natural variation of brightness and color, and that you had good luck with these softer polygenetic factors. Meaning you just got lucky and they turned out especially pretty and its nothing genetic.