Axolotl Morph ID

[Arget]

I have two wild type axolotls, and they bred unexpectedly on 12-21-2021. The larvae are about 15 days old now, growing good and getting their front legs. I have a lot of wild type larvae, some leucistic, and golden albino. Some of the golden albino larvae look different. When I separated them into jars for counting and held them up to the light, some of them have what looks like yellowish mottling on the back, and some lack it. Could some of the "golden albino" larvae lacking the mottling be white albino? Or is it just some of them having more or less iridophores/xanthophores?