Savannah sits next to 4 phonetic neighbors — Savanna, Susannah, and Hannah are the closest matches by sound. Most share Savannah's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"treeless plain, open grassland"
"heavenly ascent, to rise"
"descendant of Conn"
"noble, exalted (via Alice)"
"ugly head (from ceann donn)"
"grace, feminine beauty"
"Victory; triumph; conqueror"
"listener"
"alive, full of life"
"the sea"
"dawn"
"illusion, magic, cosmic veil"
"musician, entertainer"
"woman from Magdala; high tower"
"entire, all-encompassing"
"free woman"
"heavenly, of the sky"
"perfect, unblemished"
"Jupiter's child, Jove"
"island"
"rose festival"
Similar sound: These names share phonetic patterns with Savannah — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Spanish via Taino origins, giving them the same cultural heritage as Savannah.
Rhythm: Savannah is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.