Leon

• Same eraEvaLike Leon, it was given most in the 1920s.#134 · falling
• Same rhythmSummerSame beat as Leon: two syllables, stress on the first, ending on a consonant, but it starts differently.#151 · steady
• ShorterSloaneOne syllable to Leon's two, so you can tell them apart when you call both.#141 · rising
• LongerEmersynThree syllables to Leon's two: a long name beside a short one keeps them distinct.#138 · steady
• RiskyLeonaOne letter away from Leon. You'll call the wrong one for years.#429 · 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.