Austen sits next to 3 phonetic neighbors — Austin, Holsten, and Rusten are the closest matches by sound. Most share Austen's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"majestic, venerable"
"mythic bird of rebirth and renewal"
"remembered by God"
"elder, respected one"
"he judged, he governed"
"modern invented name from Kyle + -er suffix"
"son of Jen (John)"
"fortunate, blessed"
"wolf"
"modern invented name, unique spirit"
"great happiness"
"rival, eager to emulate"
"ancient, enduring"
"noble and peaceful"
"from Airelle (a place in Normandy)"
"godly ruler"
"modern invented combination"
"from Sweden, soft napped leather"
"son of Bray (from Celtic bray: brave)"
"from the high woodland clearing"
Similar sound: These names share phonetic patterns with Austen — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin Augustus origins, giving them the same cultural heritage as Austen.
Rhythm: Austen is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.