Gatlyn sits next to 4 phonetic neighbors — Gatlin, Graylen, and Caitlin are the closest matches by sound. Most share Gatlyn's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"companion, friend (Old English origin)"
"new house"
"earl, nobleman"
"supplanter"
"strength, grace, given by God"
"wise army, counsel-warrior"
"Wealthy, prosperous warrior"
"bright-headed, strife"
"bright settlement"
"advice, counsel"
"son of little fire"
"son of the angel, angelic descendant"
"dear, precious one"
"modern coinage, no historical meaning"
"downy-bearded, youthful"
"one of high authority, master"
"from the place of the sturgeon"
"all-wise"
"precious, anointed"
"of the heights"
Similar sound: These names share phonetic patterns with Gatlyn — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old English origins, giving them the same cultural heritage as Gatlyn.
Rhythm: Gatlyn is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.