I'm not familiar with what "Silver Ginger" is, but looking at the photos I think most of what happened is:@NatJ @nicalandia
How I’m the world did I produce silver gingers? Dad is a Fawn Silver Duckwing OEGB and mom was a Porcelain OEGB
Dad (Fawn Silver Ducwking OEGB) gave the genes for Silver Duckwing, with some chicks probably inheriting the Fawn part and some not. (I don't notice Fawn in the pictures you included.)
Mom (Porcelain OEGB) gave a dominant gene for Columbian, which reduces the amount of black in the birds (especially obvious in the breast of the male, which is obviously not black).
Mom gave one recessive gene for lavender and one recessive gene for mottling, but neither of those is visible in the chicks.
Mom also gave a recessive gene for gold to her sons, which is probably why the male's hackle and saddle feathers yellowish rather than a clean silver color white. This would not affect the females among the mixed chicks.
I'm not sure what other genes may be involved, if any, but I think that accounts for most of the visible traits in the pictures.