Jeyson sits next to 3 phonetic neighbors — Jason, Jayson, and Mason are the closest matches by sound. Most share Jeyson's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"healer"
"moon, moonlight"
"tranquility, harmony"
"famous land, fame of the land"
"brother (informal)"
"modern American creation, gentle (from Kevin root)"
"that which is yet to come"
"God will uplift, God will exalt"
"bright, bold (from 'Kash' element)"
"little joy"
"father, head of monastery"
"son of Kai/Kay (from Scandinavian -sen suffix)"
"kind, gentle, handsome"
"slender youth, young warrior"
"symbol of resilience and mourning"
"resolute protector"
"modern invented name, possibly eight (from Octavian)"
"from the court"
"chief, royal descendant"
"measuring instrument, standard dimension"
"foot soldier"
Similar sound: These names share phonetic patterns with Jeyson — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Greek origins, giving them the same cultural heritage as Jeyson.
Rhythm: Jeyson is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.