[Garkin]

Your original code modified to use table.insert (I assume that your table with options is called "optionsTable"):

for _, craftKey in pairs(blackSmithingRules) do
    table.insert(optionsTable, {
        type = "dropdown",
        name = getTranslated(craftKey),
        choices = getTranslateTable(sendingType),
        getFunc = function() return getTranslated(BankManager.Saved[craftKey][numProfile]) end,
        setFunc = function(value) changeTranslateTable(value,craftKey,numProfile) end,
    })
end

This code is basically the same as was suggested by Sasky.

Modified code if you use metatable as it is in HarvestMaps addon (again, I assume that you use "optionsTable"):

for _, craftKey in pairs(blackSmithingRules) do
    optionsTable:insert({
        type = "dropdown",
        name = getTranslated(craftKey),
        choices = getTranslateTable(sendingType),
        getFunc = function() return getTranslated(BankManager.Saved[craftKey][numProfile]) end,
        setFunc = function(val) changeTranslateTable(val, craftKey, numProfile) end,
    })
end