Entry point
Choose a clean promise
A beginner title should make its appeal obvious within the first few episodes. Demon hunting, mind games, sports teamwork, romantic tension, or a complete adventure are all clear promises.
Avoid starting with a franchise only because it is famous. If the first route is too long or too tangled, the viewer may blame anime instead of the entry point.
Commitment
Short and complete can be stronger than legendary
A 12- or 24-episode finished series gives a new viewer a full experience quickly. It also makes it easier to talk about what worked: pacing, characters, animation, comedy, or emotional payoff.
Long shows are not bad beginner picks, but they should match the viewer's appetite for a long-term project.
Personal fit
Use a familiar non-anime preference
If someone likes crime thrillers, start near deduction or psychological pressure. If they like superhero stories, start with training, powers, and mentor dynamics. If they like fantasy adventure, start with a complete journey.
The bridge from an existing taste is more reliable than a universal top-ten list.