Chett sits next to 4 phonetic neighbors — Chet, Brett, and Jett are the closest matches by sound. Most share Chett's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"fortress, military camp"
"Yahweh is gracious"
"day"
"army protector"
"red-haired one"
"of the Lord"
"prophet, seer"
"light, illumination"
"winding homestead"
"modern American creation"
"champion, cloud"
"God has heard (from Ja-/Jacob root) + spirit of battle (from Kayden)"
"God is gracious (via Sean)"
"open grassy plain"
"the lord (divine title)"
"He shines"
"God is salvation, Yahweh saves"
"copper merchant, kettlemaker"
"God is gracious"
"of Devon, creative modern coinage"
"of the Jordan River"
Similar sound: These names share phonetic patterns with Chett — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin via Old English origins, giving them the same cultural heritage as Chett.
Rhythm: Chett is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.