Jasiel sits next to 3 phonetic neighbors — Nathaniel, Ezekiel, and Ismael are the closest matches by sound. Most share Jasiel's Hebrew-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"God sees, God is my strength"
"male duck"
"God is gracious"
"of the angel, son of Angelo"
"valley, hollow"
"shelter, shield"
"faithful, devoted"
"wealthy guardian, guardian of fortune"
"rest (via Rocco)"
"heart, mind settlement"
"gift"
"selected, set apart, elected"
"narrow, a strait"
"God is my judge"
"thorny shrub, prickly plant"
"son of the red-haired one"
"son of the praised one"
"wealthy guardian"
"flat land"
"thunder and lightning"
Similar sound: These names share phonetic patterns with Jasiel — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Hebrew origins, giving them the same cultural heritage as Jasiel.
Rhythm: Jasiel is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.