Leah

• Same eraAdelineLike Leah, it was given most in the 2010s.#59 · rising
• Same rhythmHannahSame beat as Leah: two syllables, stress on the first, ending on a vowel sound, but it starts differently.#56 · falling
• ShorterClaireOne syllable to Leah's two, so you can tell them apart when you call both.#68 · steady
• LongerLillianThree syllables to Leah's two: a long name beside a short one keeps them distinct.#57 · steady
• RiskySophiaRhymes with Leah. Cute on a birth announcement, confusing across a playground.#5 · 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.