Find and replace the GUID's in a column of lists from another table

let
    user_list = Excel.CurrentWorkbook(){[Name="user_list"]}[Content], 
    guid_table = Function.Invoke(
        Record.FromList, 
        List.Reverse(Table.ToColumns(Excel.CurrentWorkbook(){[Name="guid_table"]}[Content]))
    ), 
    result = Table.TransformColumns(
        user_list, 
        {"guid", (x) => Text.Combine(
            List.Transform(
                Text.Split(x, ", "), 
                (w) => Record.FieldOrDefault(guid_table, w, w)
            ), 
            ", "
        )}
    )
in
    result