Aster sits next to 3 phonetic neighbors — Esther, Astra, and Astrid are the closest matches by sound. Most share Aster's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"star"
"ray of light, radiance"
"beloved (via Mia/Maria)"
"free woman, free person"
"bird-like, avian"
"Gaelic speaker"
"good judgment, wisdom"
"beautiful, lovely"
"beautiful, graceful"
"son of the fair champion"
"strength, power (associated meaning)"
"good speech"
"resurrection"
"alone, solitary"
"from Lucania (region of Italy)"
"trade wind"
"beautiful, handsome"
"lake from Scotland"
"advisor, counselor"
"one who resists authority, defiant"
"fair champion"
Similar sound: These names share phonetic patterns with Aster — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Greek origins, giving them the same cultural heritage as Aster.
Rhythm: Aster is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.