Lilly sits next to 4 phonetic neighbors — Lily, Lillie, and Millie are the closest matches by sound. Most share Lilly's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"lily flower, purity"
"noble one"
"meadow, clearing"
"temple servant, attendant at ritual"
"diminutive of Harriet (home ruler)"
"exalted, lofty, sublime"
"Aryan, noble people"
"variant of Mary (beloved, bitter)"
"Victorious one"
"living"
"diminutive of Eve or Evelyn"
"musical concord, agreement"
"ardor, enthusiasm, fire"
"alive, living"
"shining light, bright one"
"tower; watchtower"
"holly tree"
"from Latin papaver (poppy plant)"
"heaven (spelled backwards)"
"beautiful, torch"
Similar sound: These names share phonetic patterns with Lilly — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin lilium origins, giving them the same cultural heritage as Lilly.
Rhythm: Lilly is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.