Elle

• Same eraMadilynLike Elle, it was given most in the 2010s.#464 · falling
• Same rhythmReignSame beat as Elle: one syllable, ending on a consonant, but it starts differently.#451 · falling
• LongerHelenTwo syllables to Elle's one: a long name beside a short one keeps them distinct.#461 · steady
• RiskyEllieOne letter away from Elle. You'll call the wrong one for years.#24 · steady

Suggestions come from names in this year's top 1,000. Rhythm and rhyme are judged from each name's pronunciation (Wiktionary's, or espeak's reading of the spelling), so a few calls may be off.