Whitten sits next to 4 phonetic neighbors — Whitman, Weston, and Witten are the closest matches by sound. Most share Whitten's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"white settlement, white farm"
"young, youthful"
"large settlement, big homestead"
"stern, severe, serious"
"trust, reliance"
"God has heard"
"dark one"
"from Denmark, a Dane"
"bright, splendid"
"firebrand, sword blade"
"the art of the Magi (Persian wise men)"
"boundless, countless"
"little dark one"
"he to whom it belongs"
"from the hare's den"
"born of fire, handsome chief (via Kenneth/Cionaodha)"
"hollow"
"solid, strong"
"defender of men"
Similar sound: These names share phonetic patterns with Whitten — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old English hwit + tun origins, giving them the same cultural heritage as Whitten.
Rhythm: Whitten is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.