Those are not pure narragansetts. The one in front is a red-bronze which explains where the the red bronze poult came from. The one in back certainly has narragansett genes, and it also looks like it has a red gene, which would make it a golden narragansett, but the wing coverts look too dark. It may have something else in it as well. We cant see if the wings are barred or not. If they are carrying black-wing genes, the all-yellow poults could be regal reds. Bourbon reds, such as the one in the photos, could also be produced from this pair, although they would be carriers of narragansett genes.
Also, you will not be getting narragansetts if the red-bronze is not carrying a narragansett gene. And I don't think it is, because hens with one narrangansett gene look like narragansetts, not bronzes. This explains why most of the bronze/narri poults aren't showing any frosting yet. By three or four weeks, narragansett poults show some lightening of the back and wing feathers, and most of yours do not. The exception is the light headed poult with the frosted dark back. I do not know what that will grow up to look like.
But at least the mystery is solved...you don't have two pure narragansetts, so they cannot breed true. By paying close attention to the different colors you do produce, you may be able to deduce quite a bit of what genes are hidden in each bird!