Unbroken since it first appeared
Names ranked in every single year between their first recorded year and their most recent one.
A stretch ends when no registrar ranked the name that year. That almost always means it fell below a published list's cut-off, never that no child received the name, and never that it returned for any particular reason. Registrars also publish to different depths, so a name can leave one list while staying in another.
2,921 names, ordered by most separate stretches first.