Josslyn sits next to 3 phonetic neighbors — Jocelyn, Joselyn, and Jossaline are the closest matches by sound. Most share Josslyn's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"member of the Gaut tribe"
"earth, land"
"God is gracious (via Anna)"
"bright one, light"
"crooked nose"
"related to Thalia: to blossom, to flourish"
"from the round hill"
"defender of the people"
"modern invented name with English meadow roots"
"gift of God (short for Theodore/Theodora)"
"clearing in the hazel grove"
"soft split-grain leather"
"work and power"
"dark beauty"
"noble, exalted"
"pretty, beautiful, tender"
"loved one"
"charcoal maker, coal merchant"
"noble kind, of noble character"
"high chief, exalted one"
"meadow (sley element from Old English leah)"
Similar sound: These names share phonetic patterns with Josslyn — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Germanic Gautzelin origins, giving them the same cultural heritage as Josslyn.
Rhythm: Josslyn is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.