Savanna sits next to 4 phonetic neighbors — Savannah, Savana, and Shavanna are the closest matches by sound. Most share Savanna's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"flat tropical grassland"
"canopy of leafy boughs"
"strong, vigorous"
"dark one, descendant of the dark one"
"cart driver, transporter"
"new beginning"
"narrow strait or channel"
"heavenly ocean, royal sea"
"heavenly flower"
"gentle, innocent, nurturing"
"my God is abundance"
"to give thanks, thankfulness"
"jovial, cheerful, good-humored"
"born on Christmas Day"
"mountain region"
"my God is abundance"
"my sweetness"
"reference to Our Lady of Ainhoa (the Virgin Mary)"
"precious gem"
"boomerang"
"angelic, messenger of God"
Similar sound: These names share phonetic patterns with Savanna — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Taíno via Spanish origins, giving them the same cultural heritage as Savanna.
Rhythm: Savanna is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.