Alva sits next to 5 phonetic neighbors — Elva, Alba, and Alma are the closest matches by sound. Most share Alva's Scandinavian cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"elf, supernatural being of light"
"supplanter, one who follows"
"Basque feminine name, possibly 'noble lady'"
"twin"
"pure, spotless"
"bright, luminous, radiant"
"beautiful, lovely"
"place among the rocks"
"little, small"
"summer"
"Our Lady of Solitude (Marian title)"
"manly, virile"
"dear rose"
"well-loved"
"feminine form of Darian/Darius"
"anointed one (via Christos)"
"emerald (precious green gemstone)"
"combination of Maria and Marcela (little warrior)"
"belonging to the Lord"
Similar sound: These names share phonetic patterns with Alva — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old Norse origins, giving them the same cultural heritage as Alva.
Rhythm: Alva is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.