Refocus on SEO
Content in bucket two (articles that are relevant today but do not bring any traffic) may do well with a little focus on SEO. Google algorithms have evolved quite a bit over the past few years and long-form content ranks better than short articles that are under 500 words long. You may look at updating your articles with more data and featuring it from your blog homepage again. This helps the updated content to be crawled by search engine bots, and you could start seeing more traffic from these pages once again.