Flow chart to explain crawled not indexed content in Google. A more detailed explanation is available at: https://fruition.net/blog/crawled-currently-not-indexed-content
Crawled not indexed is a category of urls included in Google Search Console. It is one of the most interesting sources of information provided for Google. If you are working on a website's SEO, craweled not indexed is probably the first place your should go.
This flow chart helps SEO specialists figure out how to adjust website content to get it indexed and ranking for particular keywords.