Elsa sits next to 4 phonetic neighbors — Else, Elsa, and Ella are the closest matches by sound. Most share Elsa's German-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"pledged to God"
"from the city of Larisa"
"sea of bitterness (etymological root)"
"tower of God"
"river of the wolf (Arabic origin)"
"crown of laurels"
"devoted to God, merged with the divine"
"swallow (migratory bird)"
"fertile place, place of abundant water"
"of noble kind"
"of the Claudian clan"
"my God is abundance"
"defender, helper of mankind"
"resting place, home"
"grace, favor"
"grace, merciful"
"to be of worth, to be strong"
"feminine of Michael (gift of God in folk etymology)"
"mountainous, of the mountains"
Similar sound: These names share phonetic patterns with Elsa — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Germanic/Hebrew origins, giving them the same cultural heritage as Elsa.
Rhythm: Elsa is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.