Asteria sits next to 4 phonetic neighbors — Astara, Astrid, and Astra are the closest matches by sound. Most share Asteria's Greek-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"star, starry one"
"divine, of Zeus"
"of Mars, belonging to the war god"
"of the Livius clan"
"bright, shining light"
"champion, passionate"
"peace"
"captivating beauty (traditional interpretation)"
"named after William Cattley, horticulturist"
"life-giving, full of life"
"each of the two"
"victory of the people"
"dawn, radiance"
"she who hides, concealer"
"moon"
"perfect knowledge"
"of Lavinium, Roman city"
Similar sound: These names share phonetic patterns with Asteria — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Ancient Greek origins, giving them the same cultural heritage as Asteria.
Rhythm: Asteria is a 4-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.