Dwight sits next to 4 phonetic neighbors — White, Brite, and Knight are the closest matches by sound. Most share Dwight's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"blond, white, bright one"
"bright one, luminous"
"divine, godlike"
"joyful outcry"
"gift of God"
"brave one, bold and courageous"
"of the sea (via Marius)"
"tumult, riot"
"God given, divine gift"
"hall, noble"
"wise power"
"passion, zeal (from root name Rhys)"
"grandfather"
"cheerful, jovial"
"invented American name, possibly river (from Zaire)"
"victory of the people"
"defender of men"
"ruler's counselor"
"great, supreme, exalted"
"lake meadow"
"one who sails, mariner"
Similar sound: These names share phonetic patterns with Dwight — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Dutch De Witt origins, giving them the same cultural heritage as Dwight.
Rhythm: Dwight is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.