Juvia sits next to 4 phonetic neighbors — Olivia, Lyvia, and Sylvia are the closest matches by sound. Most share Juvia's Spanish/Latin-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"rain, rainfall"
"healthy, whole"
"hoped for"
"young deer"
"God is gracious"
"famous warrior"
"flowing stream"
"valley of the River Kent"
"god of war"
"benevolent reason or principle"
"modern invented elaboration of Ava"
"labyrinth, complex network of paths"
"person, precious thing"
"variant of Ailey, noble kind"
"God is witness"
"abundance, growth"
"variant of Laney (lane dweller)"
"Pæcc's settlement (Old English place name)"
"place name: Zeppelinheim, Germany"
"moon, moon goddess"
"to give thanks, to be grateful"
Similar sound: These names share phonetic patterns with Juvia — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Spanish/Latin origins, giving them the same cultural heritage as Juvia.
Rhythm: Juvia is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.