Jailani sits next to 5 phonetic neighbors — Jaylani, Jalani, and Kalani are the closest matches by sound. Most share Jailani's Arabic/Persian-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"of Gilan, associated with the Gilani saint"
"purpose, goal"
"faith, belief"
"the happy one"
"child of warmth"
"angel; messenger of God"
"happiness"
"sublime, high-ranking"
"mighty, great, powerful"
"divine loving-kindness"
Similar sound: These names share phonetic patterns with Jailani — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Arabic/Persian origins, giving them the same cultural heritage as Jailani.
Rhythm: Jailani is a 4-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.