Kashtyn sits next to 4 phonetic neighbors — Kashton, Caston, and Ashton are the closest matches by sound. Most share Kashtyn's American English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"creative modern variant of Ashton/Cashton"
"God is gracious (via Eoin/John)"
"surname derived from topographic ridge"
"elder, one of authority"
"slender one"
"modern invented name, no historical meaning"
"crown, wreath"
"moonlit, of the moon"
"hilltop estate"
"hare meadow"
"red-haired, little redhead"
"God is salvation"
"people's lord"
"marshy land by a lake"
"invented name; light or replica"
"American creative variant of Trevor"
"counselor, advisor"
"good race, fine stock"
"son of Ty (informal)"
"protector of men"
"companion, friend"
Similar sound: These names share phonetic patterns with Kashtyn — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have American English origins, giving them the same cultural heritage as Kashtyn.
Rhythm: Kashtyn is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.