i would like to know more about the genetics

in the video description it says: "Shown are 1.1 Huffman POG, a Hypo Huffman, Pastel Huffman, Huffman Pewter and the Slick."

so, what is POG? and what is "the Slick"? the other ones are quite clear, but with these i have difficulty figuring out the genetics.

anyway, they look really cool ^^