Charm sits next to 4 phonetic neighbors — Carmen, Charmaine, and Harmony are the closest matches by sound. Most share Charm's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"song, chant"
"high tower"
"crown of laurel"
"flowing water, stream"
"ten (from French dix)"
"spinner dolphin"
"modern invented name with nature roots"
"beautiful excellent one"
"sky blue, azure color"
"a history, a recounting (archaic)"
"brave in battle, vigilant in war"
"brilliant, shining"
"free woman, strong woman"
"everything is all right; peaceful harmony"
"vigilant, watchful in battle"
"myrtle plant"
"great queen"
"radiance, dawn"
"praised"
"clearing with bent grass"
"lapis lazuli blue"
Similar sound: These names share phonetic patterns with Charm — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin origins, giving them the same cultural heritage as Charm.
Rhythm: Charm is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.