Benson sits next to 3 phonetic neighbors — Benton, Jensen, and Beckett are the closest matches by sound. Most share Benson's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"son of Benedict/Benjamin"
"Frenchman"
"handsome, beautiful"
"elf counsel, supernatural wisdom"
"strong, healthy"
"the great river"
"from Attica, man of Athens"
"gentle, loyal one"
"flat-nosed (secondary Greek meaning)"
"statement of belief, system of faith"
"of the Cassian family (Roman gens)"
"true, faithful, genuine"
"rising in the sky, boundary"
"son of Jens (son of John)"
"fair, pale, bright"
"foot soldier"
"at the ford"
"descendant of Grádaigh"
"good, blessing"
"passion, fire"
Similar sound: These names share phonetic patterns with Benson — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have English origins, giving them the same cultural heritage as Benson.
Rhythm: Benson is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.