Marianna sits next to 5 phonetic neighbors — Mariana, Marianne, and Arianna are the closest matches by sound. Most share Marianna's Italian-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"grace and drop of the sea (Maria + Anna)"
"origin, beginning, creation"
"fidelity, eternity (symbolic)"
"eagle valley"
"modern invented name"
"little one (diminutive suffix)"
"to strive, to rival, to excel"
"white settlement"
"pure (via Kayla/Katherine association)"
"land of mountains"
"sun goddess"
"supplanter, one who follows"
"woman from Magdala"
"defender of men"
"Mary of Solitude (Maria de la Soledad)"
"youthful (from Julia)"
"pure, innocent"
"bright fame, shining fame"
"beautiful"
"hunter, game keeper"
Similar sound: These names share phonetic patterns with Marianna — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin/Hebrew compound origins, giving them the same cultural heritage as Marianna.
Rhythm: Marianna is a 4-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.