Lillyanne sits next to 4 phonetic neighbors — Lillian, Liliana, and Lily Anne are the closest matches by sound. Most share Lillyanne's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"lily flower"
"beautiful, precious"
"pearl or bitter (Mae component)"
"lake (from Welsh -lyn element)"
"water sprite, fairy of rivers and lakes"
"from the round hill"
"literary creation; joyful, beloved"
"miracle"
"noble kind"
"lake maiden"
"beloved one"
"son of Adam, earth (from Addison)"
"narrow channel or strait"
"noble strength"
"name of indigenous Scandinavian people"
"plaything (original Latin sense)"
"bitter, beloved"
"long live! (exclamation of celebration)"
"curly-haired"
"very holy one"
"breath of life"
Similar sound: These names share phonetic patterns with Lillyanne — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin origins, giving them the same cultural heritage as Lillyanne.
Rhythm: Lillyanne is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.