Circe sits next to 3 phonetic neighbors — Sirce, Cersei, and Kirke are the closest matches by sound. Most share Circe's Greek-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"to circle, to spin"
"each of the two (disputed origin)"
"beloved lady, star of the sea"
"orange tree"
"work power; powerful ruler"
"Ireland; from the island of Ireland"
"light, brilliance"
"rock, stone"
"white, pure (lily flower blend)"
"related to Thalia: to blossom, to flourish"
"the garden, the orchard"
"meadow, woodland clearing"
"loosening, release"
"pre-Greek plant name (Minoan/Mycenaean origin)"
"woman of honor"
"moon goddess"
"fortunate, auspicious"
"wanderer"
"diminutive of Elizabeth"
"elf counsel"
Similar sound: These names share phonetic patterns with Circe — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Greek origins, giving them the same cultural heritage as Circe.
Rhythm: Circe is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.