Vienna sits next to 4 phonetic neighbors — Viena, Vivienne, and Sienna are the closest matches by sound. Most share Vienna's German-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"white or bright settlement"
"black, dark-colored"
"cold, dark season of rest and renewal"
"flowing, streaming"
"song, poem"
"divine radiance"
"bright red, vivid crimson"
"precious gem"
"of the sun"
"God is my strength"
"son of Finlay (surname origin)"
"pure, clear"
"grey fortress, grey enclosure"
"goddess, divine"
"son of the handsome one"
"from the pasture land"
"plain, field, open land"
"words of a song, poetic"
"ambergris, waxy substance"
"shining light, bright one"
"from the city of London"
Similar sound: These names share phonetic patterns with Vienna — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Celtic origins, giving them the same cultural heritage as Vienna.
Rhythm: Vienna is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.