Jazlynn sits next to 4 phonetic neighbors — Jasmine, Jesslyn, and Jazmin are the closest matches by sound. Most share Jazlynn's American English, invented-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"jazz music combined with lake or pool"
"maple tree"
"Yahweh has shown favor"
"herb of grace, regret"
"from the church, basilica"
"dark, black"
"daughter of the sea"
"gold"
"rose garden"
"victory of the people (via Nicholas)"
"harmful spirits, demons"
"little stream, flowing water"
"modern melodic invention"
"eternal blossom"
"dweller by the lane"
"falling tone, resolution"
"rye field"
"place of linden trees"
"youthful (from Julia)"
"life"
"song of joy"
Similar sound: These names share phonetic patterns with Jazlynn — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have American English, invented origins, giving them the same cultural heritage as Jazlynn.
Rhythm: Jazlynn is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.