That first hen is lovely - love the colouring.Silkies have a specific shape, much like Polishes have their own shape. 5 toes, often dark skin and innards, comb and wattle shape, big ol cushion at the base of the tail.
A silkie mixed may inherit the specifics, but not the silkied feathers, then they're satin. Often they also have traits of other breeds.
Satin silkies are basically just a name for a bird with a specific shape or bloodline, but normal feathers.
Hope this helps, my migraine pills have finally started kicking in.
Some photos of my sillies
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