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"
"eastern Saxon territory"
"firebrand, son of Tye"
"subject, flock (of subjects)"
"man from South Munster (southern Ireland)"
"son of Rath (prosperity)"
"heel, ankle"
"prophet, seer"
"God is gracious"
"to flow down, descend"
"gift of God"
"enclosed field"
"royal title for kings children (Iberian)"
"of America, American"
"victory of the people (via Nicholas root)"
"valley, dale"
"modern coined name, possibly hillside light"
"dark red, crimson"
"guardian, soldier"
"rue plant, bitter herb"
"bard, sage"
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.