Obama sits next to 2 phonetic neighbors — Oba and Omaha are the closest matches by sound. Most share Obama's Luo-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"curved riverbank or piece of land"
"devoted one, one who submits to God"
"see, a son is born"
"name reflecting strength and perseverance"
"divine gift"
"God is my help"
"brave, bold, courageous"
"beloved, dearly loved"
"last, final"
Similar sound: These names share phonetic patterns with Obama — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Luo origins, giving them the same cultural heritage as Obama.
Rhythm: Obama is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.