Effie sits next to 4 phonetic neighbors — Elfie, Evie, and Elfi are the closest matches by sound. Most share Effie's Scottish cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"well-spoken, of good repute"
"breath of life"
"modest, virtuous"
"diminutive of Philippa/Filippa"
"from Tracé, Normandy"
"queen, powerful ruler"
"river mouth, coastal inlet"
"daughter of the night"
"renowned in battle"
"light and warmth from the sun"
"crowned with laurel, victorious"
"bright, shining one"
"woman of Magdala, beloved"
"night, darkness"
"noble, of noble lineage"
"chosen, selected, specially picked"
"my love (term of endearment)"
"musical consonance"
"jasmine flower"
"devoted to God"
"sparkling, clear gem"
Similar sound: These names share phonetic patterns with Effie — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Greek origins, giving them the same cultural heritage as Effie.
Rhythm: Effie is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.