Jocelyn sits next to 4 phonetic neighbors — Roselyn, Jacelyn, and Evelyn are the closest matches by sound. Most share Jocelyn's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"member of the Gauts (Germanic tribe)"
"crowned one"
"entire, all-encompassing"
"son of Kenneth"
"noble pledge"
"fair, comely"
"meadow, clearing"
"crown of laurels"
"lion of God"
"gift from God"
"graceful beauty"
"white hero"
"Cyneburga's meadow"
"hill meadow"
"rival, striving"
"high-born chief of the heavens"
"little hollow, low-lying meadow"
"high tower"
"birthday (of the Lord)"
"hedged valley"
"of the Caecilii, ancient Roman clan"
Similar sound: These names share phonetic patterns with Jocelyn — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Germanic origins, giving them the same cultural heritage as Jocelyn.
Rhythm: Jocelyn is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.