Lillith sits next to 4 phonetic neighbors — Lilith, Lilly, and Lillithe are the closest matches by sound. Most share Lillith's Hebrew-rooted cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"of the night, night creature"
"excellence, mastery (from Ace) + lake/waterfall (from Lynn)"
"the Lord is my God"
"lion of God (as short form of Ariel)"
"from the brick clearing or meadow"
"wonderful, marvelous"
"honor, dignity"
"Graceful and beautiful"
"joyful, filled with happiness"
"to esteem, to value (from aestimare)"
"Woman, feminine"
"heavenly May flowers"
"one of a kind; singular"
"dearness, preciousness"
"slender, fair"
"creative variant of Kinsley"
"singing, hymn of praise"
"island of Kell, Kell's island"
"high, elevated place"
"joyful"
Similar sound: These names share phonetic patterns with Lillith — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Hebrew/Akkadian origins, giving them the same cultural heritage as Lillith.
Rhythm: Lillith is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.