Has the W3C ever published a standard set of meta tags?

Has there ever been a W3C spec on what meta tag names are "valid" in HTML? I know onotogloies like Dublin Core have developed standard names, but has the W3C ever published anything that says Tag Name 开发者_高级运维X is "valid" or is this all still completely subjective and driven by usage?

I Googled, but found nothing.

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They are trying in HTML 5.

The attempt is, however, laughable:

Extensions to the predefined set of metadata names may be registered in the WHATWG Wiki MetaExtensions page. [WHATWGWIKI]

Anyone is free to edit the WHATWG Wiki MetaExtensions page at any time to add a type.