Rosario sits next to 4 phonetic neighbors — Rosaria, Rosalie, and Rosa are the closest matches by sound. Most share Rosario's Spanish-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"rosary, garland of roses"
"beautiful, pleasant"
"pledge, hostage"
"honor, fame"
"dark one, man from the dark sea"
"God is gracious"
"clear ice, rock crystal"
"garden, vineyard"
"earth worker (via Georgina)"
"grace and beauty"
"freshness, purity"
"gracious gift"
"one who hears, listener"
"bright, radiant"
"noble, nobility"
"resurrection, she who shall rise again"
"gracious, dear, beloved (via Slavic mila)"
"victory, triumph"
"light, illumination"
"indigenous Mexican name of Michoacan origin"
Similar sound: These names share phonetic patterns with Rosario — 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 Rosario.
Rhythm: Rosario is a 4-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.