To my understanding those files are not notarizable files
It depends. You can submit any file to the notary service, simply by placing it in a zip archive. However, the purpose of notarisation is to generate a notarised ticket and that ticket only includes information about signed code. See the Notarisation Fundamentals and The Pros and Cons of Stapling posts referenced by Notarisation Resources. So it’s hard to say whether you notarising these files will actually do anything useful.
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Quinn “The Eskimo!” @ Developer Technical Support @ Apple
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