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Examples of meta tags: keywords, description, publisher, copyright, robots, language, document type, etc.
The others won't add anything in particular.
Title is essential - it's the heading for your SERP listing.
Description is often used by directories, etc as your snippet, so make it good.
Keywords in particular is paid rather limited/no attention by some engines, but is also used by a number of others, and a lot of smaller directories, etc, so is worth retaining.