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"
"son of Carr, son of the marsh dweller"
"Lord, have mercy (liturgical)"
"nobleman, warrior"
"little hawk"
"ocean, soaring sea"
"modern invented name, unique spirit"
"champion, cloud"
"bold counsel, brave advisor"
"wealth and power"
"son of Elijah"
"young warrior"
"wolf"
"to hunt, to chase"
"tile-maker, tiler"
"to tame, subdue"
"rival, eager to emulate"
"inspired counsel"
"sharp hill, ridge"
"uncertain, possibly warrior spirit"
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.