Jaciel sits next to 3 phonetic neighbors — Jabiel, Jaziel, and Gabriel are the closest matches by sound. Most share Jaciel's Spanish-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"God sees"
"the god of love"
"God's salvation"
"strength of God, God is my light"
"from Rome, Roman pilgrim"
"God has made, made by God"
"diminutive of Manuel"
"honey, sweet"
"protector of mankind"
"mythic bird of rebirth and renewal"
"very handsome, beautiful"
"nobleman, member of the patrician class"
"melody, song (mythological)"
"one who helps or aids"
"God has promised"
"one who works the earth"
"supplanter (via Jacob/James)"
"gift of God"
Similar sound: These names share phonetic patterns with Jaciel — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Hebrew origins, giving them the same cultural heritage as Jaciel.
Rhythm: Jaciel is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.