Saga sits next to 4 phonetic neighbors — Saga, Sadie, and Sasha are the closest matches by sound. Most share Saga's Scandinavian cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"narrative, story, tale"
"demigod, hero"
"from Sebaste, revered, venerable"
"pure, clear (via Katherine)"
"lily flower"
"Divine spirit, intermediary deity"
"judge"
"gracious, full of grace"
"elf friend"
"little victorious one"
"bright, shining one"
"She who rises, one reborn"
"peace"
"bright, shining light"
"follower of Christ (short for Christopher)"
"Of noble nature"
Similar sound: These names share phonetic patterns with Saga — 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 Saga.
Rhythm: Saga is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.