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"
"bright, cheerful"
"soft, tender, gentle"
"pure, beloved"
"hammer"
"expectation, anticipation"
"dove"
"the sky, cloud"
"bright, shining light"
"noble, of noble birth"
"praised, she will be praised"
"of the Antonius family"
"lily of grace"
"sweet-faced, graceful aspect of Durga"
"little one (diminutive suffix)"
"gentle rose"
"God is my oath"
"feminine form of Michael"
"olive"
"mountain of whiteness"
"weary"
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.