To improve anchor text diversity, you should adopt a strategic and natural approach to link building that focuses on the value and relevance of your links, rather than the keywords. For example, use branded anchor text to build trust and recognition for your site, such as your site name, domain name, or variations of your brand name. You should also use exact match and partial match anchor text sparingly when they make sense in the context of the link. Additionally, generic anchor text can create natural and conversational links that do not look forced or keyword-stuffed. For example, words like "click here", "learn more", "read this", or "check out this article" as anchor text. Furthermore, you can use naked URLs to show transparency and credibility for your links. Lastly, synonyms, variations, and long-tail keywords can be used as anchor text to diversify your keyword portfolio and target different search intents.