Shelton sits next to 5 phonetic neighbors — Sheldon, Dalton, and Colton are the closest matches by sound. Most share Shelton's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"from the ledge farm, shelf settlement"
"high, noble, exalted"
"modern invented elaboration of Kasey"
"ridge settlement"
"the sun, solar light"
"royal clearing"
"son of, awakening"
"variant of Karen or Karin"
"who is like God"
"Yahweh has treasured"
"one who honors God"
"from the settlement near St. Botolph"
"grey valley or grey pool (surname origin)"
"black banded gemstone"
"Derived from Alfred, meaning counsel of elves"
"from Britain, Briton"
"the sparrow bird"
"aspen tree, trembling poplar"
"modern American invented name"
"saddlemaker, one from the homestead"
"God is gracious (via John)"
Similar sound: These names share phonetic patterns with Shelton — 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 Shelton.
Rhythm: Shelton is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.