Lilla sits next to 4 phonetic neighbors — Lily, Lila, and Ella are the closest matches by sound. Most share Lilla's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"lily flower"
"free woman"
"divine, godly"
"bright, shining (variant of Helen)"
"modern invented name, deer by the lake"
"from Wales, land of Cymry"
"feminine form of Simon"
"striving, rival"
"elf friend"
"weary, delicate"
"son of Roy, descendant of the king"
"hardworking, industrious (via Millicent)"
"cheerful, merry, joyful"
"healing herb, health"
"corn, maize"
"noble, exalted"
"heaven, the afterlife realm of joy"
"brilliantly beautiful, famous and lovely"
"follower of Christ"
"dedicated to Mars, martial"
"the hazel tree"
Similar sound: These names share phonetic patterns with Lilla — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin origins, giving them the same cultural heritage as Lilla.
Rhythm: Lilla is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.