Svetlana sits next to 3 phonetic neighbors — Svetlana, Lana, and Sveta are the closest matches by sound. Most share Svetlana's Russian-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"light, holy light"
"adornment, beauty (Arabic Zayna connection)"
"peace, wholeness"
"gift from God"
"fairy queen (folk etymology)"
"pure"
"princess, radiance"
"little Mikhail, little Michael"
"one who is reborn"
"youthful, downy-bearded"
"to rise, to dawn"
"born on Sunday"
"wisdom (via Sonya/Sophia)"
"who is like God (via Mikhail)"
Similar sound: These names share phonetic patterns with Svetlana — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old Slavic origins, giving them the same cultural heritage as Svetlana.
Rhythm: Svetlana is a 4-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.