Your Albino hen is actually a lacewing, this is the cinnamon markings with red eyes and cinnamon tail feathers on her. This would make the grey split lacewing, explaining the lacewing hen babies. Your lutino is split blue series, explaining the white lacewing baby. All the yellow babies from this pair will be split blue series from the cock bird. Ino (weather it be albino or lutino, same gene different colour series) is dominant to lacewing so the lutino cock bird baby will be split for lacewing as well as split blue series. As far as the spangle babies go, were the parent birds in a community aviary with other budgerigars prior to pairing? If so it has been my experience that the hen can be fertilised in the aviary prior to pairing. This would also explain why no spangles appeared in second clutch as they are from second fertilisation by the cock bird in the pairing.