Zelia sits next to 4 phonetic neighbors — Celia, Delia, and Amelia are the closest matches by sound. Most share Zelia's Portuguese-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"zealous, ardent, passionate"
"noble beauty"
"devoted to the harvest goddess"
"brown-haired, dark complexioned"
"noble and gentle"
"dark-complexioned (via Melania)"
"devoted to the earth"
"living, alive"
"earth, ground"
"God is gracious"
"young ceremonial attendant"
"of the Livius family; belonging to Livia"
"of gold, golden-haired"
"famous warrior"
"place name, possibly crown or river settlement"
"my God is abundance"
"light, bringer of light"
"noble Mary, radiant beloved"
"beautiful"
"land of brazilwood, ember-red wood"
Similar sound: These names share phonetic patterns with Zelia — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Greek origins, giving them the same cultural heritage as Zelia.
Rhythm: Zelia is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.