Best I could find was-
Unlike disallowed pages, noindexed pages don’t end up in the index and therefore won’t show in search results. Combine both in robots.txt to optimise your crawl efficiency: the noindex will stop the page showing in search results, and the disallow will stop it being crawled
From-https://www.deepcrawl.com/blog/best-practice/robots-txt-noindex-the-best-kept-secret-in-seo/