Collis

• Same eraHaroldLike Collis, it was given most in the 1920s.#991 · steady
• Same rhythmLangstonSame beat as Collis: two syllables, stress on the first, ending on a consonant, but it starts differently.#999 · falling
• ShorterLevOne syllable to Collis's two, so you can tell them apart when you call both.#999 · steady
• LongerEphraimThree syllables to Collis's two: a long name beside a short one keeps them distinct.#988 · steady
• RiskyCollinOne letter away from Collis. You'll call the wrong one for years.#493 · 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.