Helen

• Same eraAlmaLike Helen, it was given most in the 1920s.#449 · steady
• Same rhythmGracelynSame beat as Helen: two syllables, stress on the first, ending on a consonant, but it starts differently.#466 · falling
• ShorterElleOne syllable to Helen's two, so you can tell them apart when you call both.#461 · steady
• LongerAliciaThree syllables to Helen's two: a long name beside a short one keeps them distinct.#460 · steady
• RiskyHelenaOne letter away from Helen. You'll call the wrong one for years.#363 · rising

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.