Aslan sits next to 3 phonetic neighbors — Arslan, Azlan, and Aslen are the closest matches by sound. Most share Aslan's Turkic-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"lion"
"the refreshing one"
"olive tree"
"enlightened, bright, intelligent"
"little ancient one"
"savior (indirect meaning)"
"elegant, attractive"
"his excellence, his preeminence"
"Yahweh is my God"
"wealthy guardian"
"founder, builder (cultural meaning)"
"he who holds firm the good"
"crowned with laurels, victorious"
"excellent, virtuous"
"gift of the Lord"
"goodness of Yahweh"
"immortal, not mortal"
Similar sound: These names share phonetic patterns with Aslan — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Turkic origins, giving them the same cultural heritage as Aslan.
Rhythm: Aslan is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.