OK so it appears #Intel released a list of product lines vulnerable to Meltdown & Spectre, I missed it before because none of the articles I had read linked to it but I just found it on a comment on Anandtech.
So if you have an Intel CPU in any of the product lines listed in the attached picture you are vulnerable to Meltdown and/or Spectre, in the case of Intel you are vulnerable to both but in the case of AMD & ARM you are only vulnerable to Spectre.

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