June

• Same eraGenevieveLike June, it was given most in the 1920s.#148 · steady
• Same rhythmSloaneSame beat as June: one syllable, ending on a consonant, but it starts differently.#141 · rising
• LongerSummerTwo syllables to June's one: a long name beside a short one keeps them distinct.#151 · steady
• RiskyJaneOne letter away from June. You'll call the wrong one for years.#221 · 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.