Linking same content across multiple docs, each with unique font attributes?

We have products at my corporation that require the same content but different size documents requiring different font sizes, leading and tracking. Is there a way to have all the text linked into one icml file and disable font attribute changes? If there was it would make our workflow so much faster. We've got one main product with 10 different size labels that go on different packaging. If I could make the content/text updates to one file instead of ten it would be amazing!