Eyvone sits next to 4 phonetic neighbors — Yvonne, Evonne, and Simone are the closest matches by sound. Most share Eyvone's French-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"yew wood"
"dear friend, beloved companion"
"iris flower"
"dear one, beloved"
"Beloved"
"old river; ancient one"
"creative coinage combining Mon- (advisor) and -ella (beautiful)"
"camellia flower (from botanist Kamel)"
"Possibly from derdriu, meaning raging woman or feared one"
"plain, fertile flatland"
"peace"
"defender of men"
"Royal Hill, King's Mountain"
"God is gracious"
"term of endearment"
"queen, regal grace"
Similar sound: These names share phonetic patterns with Eyvone — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Germanic via French origins, giving them the same cultural heritage as Eyvone.
Rhythm: Eyvone is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.