Hello, foxtrot01 and
to NGA!
I am not able to tell you what those seedlings are, but I CAN tell you what they are not: callas (Zantedeschia sp.). I hope you were not scammed by those unscrupulous sellers that do not hesitate to Photoshop their pictures offering things such as roses with a different colour on each petal, strawberries in every colour of the rainbow, blue and white Liliums, etc.
Anyway, you will more likely get an accurate ID of your seedlings if you have your enquiry moved to the 'Plant ID' forum (I am requesting this for you).
