Lukas

• Same eraCashLike Lukas, it was given most in the 2010s.#287 · steady
• Same rhythmAresSame beat as Lukas: two syllables, stress on the first, ending on a consonant, but it starts differently.#290 · rising
• ShorterKashOne syllable to Lukas's two, so you can tell them apart when you call both.#286 · steady
• LongerAveryThree syllables to Lukas's two: a long name beside a short one keeps them distinct.#291 · falling
• RiskyLucasOne letter away from Lukas. You'll call the wrong one for years.#10 · 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.