Sean

• Same eraErikLike Sean, it was given most in the 1980s.#545 · falling
• Same rhythmRoyceSame beat as Sean: one syllable, ending on a consonant, but it starts differently.#499 · steady
• LongerArjunTwo syllables to Sean's one: a long name beside a short one keeps them distinct.#490 · steady
• RiskyDeanOne letter away from Sean. You'll call the wrong one for years.#125 · 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.