Lillie sits next to 4 phonetic neighbors — Lily, Lilly, and Billie are the closest matches by sound. Most share Lillie's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"lily flower, purity"
"who is like God?"
"beautiful"
"Yahweh has helped"
"noble kind (from Alice)"
"bright, shining one"
"supplanter, one who follows"
"petite woman"
"divine radiance"
"goddess of flowers and spring"
"elf counsel, elf power"
"made of gold, golden"
"dream, aspiration, vision"
"sunny place, sunshine"
"seven, completeness, divine perfection"
"star, heavenly body"
"gift of God (variant of Maisie/Matthew)"
"angel, heavenly messenger"
"bride"
"shining upon man"
"combination of Z + Lee (clearing, meadow)"
Similar sound: These names share phonetic patterns with Lillie — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin origins, giving them the same cultural heritage as Lillie.
Rhythm: Lillie is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.