Kashdyn sits next to 3 phonetic neighbors — Kashton, Caden, and Ashton are the closest matches by sound. Most share Kashdyn's American English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"modern American invented name"
"from the fortress"
"continuous improvement, change for the better"
"land near the court"
"meadow, pasture (possible alternate)"
"destroyer (possible etymological root)"
"rock, fortress"
"noble, virtuous"
"natural, undomesticated"
"from the village of Estry in Normandy, France"
"noble excellence, virtue"
"treetop, eloquent speaker"
"servant, messenger"
"settlement among the undergrowth, brushwood farm"
"precious green stone; holder of good"
"helped by God, whom God helps"
"from the sea"
"near the thicket"
"royal clearing"
"new house, new home"
Similar sound: These names share phonetic patterns with Kashdyn — 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 Kashdyn.
Rhythm: Kashdyn is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.