Zyel sits next to 3 phonetic neighbors — Ziel, Zyler, and Aziel are the closest matches by sound. Most share Zyel's American/Hebrew-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"modern invention, possibly God-related via -el suffix"
"keeper of the garden, gardener"
"will-helmet (determined guardian)"
"independent"
"Yahweh remembers"
"son of Roger, famous spear"
"prince, commander (via Arabic Amir root)"
"things to be read/remembered"
"race, swift movement"
"possessing goodness; gift"
"fair, white + warrior, hero"
"joy, song of life"
"strong, valiant"
"from Hadria (a Roman city)"
"age, era, vast expanse of time"
"to hang, weigh, measure"
"his name is God"
"cat (via Japanese neko)"
"falcon, bird of prey"
"beloved friend"
Similar sound: These names share phonetic patterns with Zyel — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have American/Hebrew origins, giving them the same cultural heritage as Zyel.
Rhythm: Zyel is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.