Ather sits next to 4 phonetic neighbors — Arthur, Aether, and Asher are the closest matches by sound. Most share Ather's Arabic-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"trace, impression, mark left behind"
"sheep"
"brave journey"
"the little one"
"true, genuine; from the Norman place Ver"
"rocky crag"
"Holy Spirit"
"serpent, twin (from coatl)"
Similar sound: These names share phonetic patterns with Ather — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Arabic origins, giving them the same cultural heritage as Ather.
Rhythm: Ather is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.