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"
"possibly 'free one of God' (Hawaiian/Hebrew blend)"
"calla lily flower"
"exalted, high-born"
"goddess, divine"
"blissful, from Elysium"
"white, blessed + elm tree (hybrid)"
"meadow near the hill"
"otherworldly paradise"
"blind, heaven's gate"
"disturbance, turmoil"
"from the hollow, dweller in the hollow"
"dweller by the brook"
"star, celestial body"
"beam of light"
"beloved"
"from the great river settlement"
"resolute guardian"
"sailor, sea person"
"narrow path, lane"
"laurel, victory"
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.