Odessa sits next to 4 phonetic neighbors — Odette, Vanessa, and Melissa are the closest matches by sound. Most share Odessa's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"city of Odysseus"
"beautiful sky"
"gift, generous"
"wool"
"native Hawaiian acacia tree"
"timid (from Bilhah)"
"woman of the tribe"
"son of Adam"
"chamomile flower"
"God is gracious"
"joy, happiness, gladness"
"bright clearing in the woods"
"army hill"
"torch, bright one"
"illusion, water"
"possibly from Sidonia, woman of Sidon"
"beloved, loved one"
"wealthy in battle"
"father's joy, source of joy"
"bright serpent, wise one"
"powerful; in a state of bliss"
Similar sound: These names share phonetic patterns with Odessa — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Greek origins, giving them the same cultural heritage as Odessa.
Rhythm: Odessa is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.