Hi there and
to the forums!
Your babies are very pretty
I agree with Shane that Snow seems to be male. Are his eyes red? If so, he is an albino. He appears to be so due to his pink feet
If not, he is most likely a dark eyed clear, as Kathryn said.
Jan looks like she is a little girl, but I can't see much of Ash's cere to accurately tell you gender
As for mutation, Snow is most likely an albino, from what I can see, Ash is a sky blue yellowface single factor spangle, and Jan is a light green greywing opaline budgie.
To accurately determine gender, close-up pictures of Jan and Ash's ceres would be great!
Congratulations on your new additions!
Will you be getting a new cage for them? Unfortunately, the cage you have them in now is barely big enough for one budgie!
Meanwhile, be sure to read through the stickies and articles here on the forums to affirm you're up to date on the best budgie care and practices
Most of your present and future questions will probably be answered by reading through them.
If you have questions after browsing all the articles and threads around here, feel free to ask!
Hope to see you, Snow, Ash, and Jan around the forums!