Looks like that’s just gold or possibly golden duckwing.
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Salmon duckwing doesn’t exist (at least genetically, it may be a variety name that doesn’t match the genetics). Salmon is based on wheaten while duckwing is on duckwing.
Silver duckwing is duckwing with the silver gene, while gold duckwing has the gold gene. However, there may be other small differences between them as well, such as differing levels of autosomal red or mahogany. Silver crossed to gold creates golden duckwing roosters (the coloration is not possible in hens), which are gold/silver splits and don’t breed true. Silver x gold crosses either result in silver or gold hens depending on which parent is silver and which is gold.