Newton sits next to 3 phonetic neighbors — Norton, Newt, and Colton are the closest matches by sound. Most share Newton's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"new town"
"night"
"island"
"one who knocks, morning star"
"brother (informal)"
"virtuous, upright"
"gift of God (Thomas) + supplanter (James)"
"God is gracious"
"from Lucania, southern Italy"
"associated with Al-Khidr, the immortal guide"
"white man, fair-haired man"
"island meadow"
"elder, presider"
"fire brand, flaming sword"
"from the rocky hill, crag dweller"
"house guardian"
"powerful, mighty"
"bright, shining, evident"
"bright day"
"sea god, messenger of the deep"
Similar sound: These names share phonetic patterns with Newton — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old English origins, giving them the same cultural heritage as Newton.
Rhythm: Newton is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.