Natasha sits next to 3 phonetic neighbors — Natalia, Tasha, and Nadia are the closest matches by sound. Most share Natasha's Russian-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"born on Christmas Day"
"little rose"
"maiden, young girl"
"white, fair, holy"
"child of light"
"sea of bitterness (etymological root)"
"defender of mankind"
"weapon, mace"
"beautiful, pretty"
"son of the marsh dwellers"
"my God is the Lord (via Hebrew Elijah)"
"pledged to God, my God is an oath"
"renowned in battle"
"grace, favor, sweetness"
"noble, of noble birth"
"divine gift, consecrated one"
"calming, soothing (by association with the herb)"
"pleasant meadow"
"white, blessed + peace"
"bright, shining light"
"from the green valley"
Similar sound: These names share phonetic patterns with Natasha — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin origins, giving them the same cultural heritage as Natasha.
Rhythm: Natasha is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.