Janiel sits next to 4 phonetic neighbors — Daniel, Nathaniel, and Emmanuel are the closest matches by sound. Most share Janiel's Spanish-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"God is gracious"
"love"
"great, vast"
"supplanter, one who grabs the heel"
"creative coinage blending Da- prefix and Kai (sea)"
"spear strength"
"fiery one"
"origin uncertain, possibly greatness"
"of the victors"
"ray of light + God is gracious"
"wisdom, scientific wonder (modern cultural meaning)"
"courteous, well-mannered"
"the great river (via Zaire)"
"ruler of the estate"
"divine favor"
"famous land, renowned in the land"
"bear king"
"hill"
"helped by God, God has supported"
"son of one with a bright mind"
"fur trapper, frontiersman"
Similar sound: These names share phonetic patterns with Janiel — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Hebrew (via Jan and -iel) origins, giving them the same cultural heritage as Janiel.
Rhythm: Janiel is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.