Board Thread:Support Requests - Getting Technical/@comment-25523075-20151121112619/@comment-1757994-20151121155324

wikipedia:Help:HTML_in_wikitext has some/most of the one used by Wikipedia. Extensions can add more own tags to the parser. Different wikis can have different extensions loaded.

(and more) is a Wikia thing for their portable infoboxes. Wikia also has.

I'm not sure there's a comprehensive list anywhere.