Corben sits next to 3 phonetic neighbors — Corbin, Corbyn, and Gordon are the closest matches by sound. Most share Corben's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"from the rounded hill"
"fortunate, consecrated"
"lion-like (from Llewelyn)"
"divinely favored, consecrated"
"the celestial vault"
"desired, longed for"
"strength, power"
"priceless one, beyond praise"
"from Alba (the white city)"
"Noble ruler; wise and powerful leader. A variant of the Old German ..."
"reward, recompense, prize for valor"
Similar sound: These names share phonetic patterns with Corben — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old French origins, giving them the same cultural heritage as Corben.
Rhythm: Corben is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.