Elvie sits next to 3 phonetic neighbors — Elvy, Elvira, and Ellie are the closest matches by sound. Most share Elvie's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"elf, magical being"
"gift from God (secondary folk etymology)"
"son of Roy, descendant of the king"
"small stream, brook"
"yellow, fair (light-haired)"
"industrious leader's child"
"defender of men, brave"
"slender, narrow"
"princess of God"
"torch, bright"
"fire, grain of fire (Gaelic Eithne)"
"God is gracious"
"sword, firebrand (Germanic etymology)"
"mountain of strength"
"noble one, of noble lineage"
"hay clearing, meadow clearing"
"stoneworker, mason"
"Odin's warrior"
"true image (from Veronica)"
"of the Livius clan"
Similar sound: These names share phonetic patterns with Elvie — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old Norse álfr origins, giving them the same cultural heritage as Elvie.
Rhythm: Elvie is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.