Lilliann sits next to 5 phonetic neighbors — Lillian, Lily, and Lilian are the closest matches by sound. Most share Lilliann's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"lily flower"
"brave as a lion"
"drop of the sea"
"spoken word, narrative"
"fair lady, white and smooth"
"going up, immigration to the Promised Land"
"consecrated to God"
"from the court"
"enduring contribution, lasting impact"
"heavenly flower garland, heavenly child"
"royalty, high chief (from lani)"
"heavenly, sky (via Hawaiian/Polynesian -ani)"
"elf friend, beloved elf"
"noble elf ruler"
"gentle one"
"feminine form of Paul; devoted to the apostle"
"royal forest clearing, Cyneburg's meadow"
"river meadow"
"work, industrious"
"beautiful friend"
"lake meadow"
Similar sound: These names share phonetic patterns with Lilliann — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin origins, giving them the same cultural heritage as Lilliann.
Rhythm: Lilliann is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.