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"
"place among the rocks"
"manly, virile"
"sea, ocean"
"grace, favor"
"joyful, exuberant"
"my joy, my song (Hebrew Roni)"
"place name from the Lima River valley"
"follower of Christ"
"follower of Christ, anointed one"
"devoted to God"
"pearl"
"one of a pair, born together"
"noble, of noble kind"
"lily flower"
"divine will"
"Odin's warrior"
"fertile slope"
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.