Right now, curation or distribution requires about a 3 minute read (about 700 words) and that we format in this order...Title, tagline, image, body of the story.
According the new CEO of Medium, Curation will get a bit tougher in the future to reward higher-quality content.
No specific tag gets distribution. But I would always use big tag topics as well as small tag topic as a combination of tags. For example, if you your story is about balancing your chakras, I would make my first tag "Spirituality" then I would go smaller with "spiritual growth", "chakras" and energu work. Tagging is an experiment all on it's own. 🤔