Lilya sits next to 4 phonetic neighbors — Lily, Lilia, and Mila are the closest matches by sound. Most share Lilya's Russian-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"lily flower"
"born at Christmas (Natalia element)"
"gift of God"
"light, shining, bright"
"victorious one"
"morning glow, aurora"
"rocky fortress city"
"tender, delicate"
"drop of the sea"
"Yahweh has been gracious"
"peace, joy"
"wisdom"
"sun ray (from helios)"
"fairy queen"
"of the Julian family"
Similar sound: These names share phonetic patterns with Lilya — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin/Greek origins, giving them the same cultural heritage as Lilya.
Rhythm: Lilya is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.