Harmony sits next to 3 phonetic neighbors — Hermione, Melanie, and Brittany are the closest matches by sound. Most share Harmony's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"musical concord, agreement"
"sorrows"
"God has answered"
"flower named for botanist Pierre Magnol"
"hay meadow"
"famous type"
"victory of the people"
"woodland clearing of the wren"
"gracious oath"
"harvest time"
"descendant of Riagan"
"treeless plain, open grassland"
"merciful, gracious"
"unfortunate, ill-omened"
"valor, strength"
"hedged valley"
"born eighth, eighth child"
"One who lives near a brook"
"descendant of Riagan"
"noble, nobility"
Similar sound: These names share phonetic patterns with Harmony — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Greek harmonia origins, giving them the same cultural heritage as Harmony.
Rhythm: Harmony is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.