Leelan sits next to 4 phonetic neighbors — Declan, Nolan, and Leland are the closest matches by sound. Most share Leelan's Old English (via Leland)-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"meadow land"
"supplanter, held by the heel"
"firebrand, spark"
"peaceful power"
"brilliantly noble"
"crowned with laurel, laurel bearer"
"noble strength"
"thankful, God has heard"
"lord, have mercy (liturgical)"
"beautiful, most beautiful"
"bought land, purchased territory"
"he who holds firm the good"
"from Erroll, Scotland"
"settlement by the leek plants"
"manly, strong, brave"
"extended form of Zia"
"little poet"
"tile maker, tiler"
"new house"
"abundance, growth, increase"
"one of high authority, master"
Similar sound: These names share phonetic patterns with Leelan — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old English (via Leland) origins, giving them the same cultural heritage as Leelan.
Rhythm: Leelan is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.