Nathalie sits next to 3 phonetic neighbors — Natalie, Natalia, and Natalee are the closest matches by sound. Most share Nathalie's French-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"born on Christmas Day"
"beloved (short form of Mary)"
"favored grace, gracious"
"whole, universal"
"beloved, of the sea"
"elevated place, great one"
"young ceremonial attendant, ritual helper"
"work, labor"
"maiden, young girl"
"short form of Helena or Magdalena"
"God is gracious"
"of the Claudian clan"
"little stream, flowing water"
"herb of grace, regret"
"sea, ocean"
"noble, of noble birth"
"prosperous, rich"
"spiritually renewed"
"pure, holy, chaste"
"little angel"
"pious, devout"
Similar sound: These names share phonetic patterns with Nathalie — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin origins, giving them the same cultural heritage as Nathalie.
Rhythm: Nathalie is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.