Lean sits next to 4 phonetic neighbors — Lane, Leon, and Lian are the closest matches by sound. Most share Lean's Irish-rooted cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"light, bright one"
"little poet"
"island"
"Red-haired"
"of the heights"
"little dark one"
"little wolf"
"fair, blessed"
"little seal"
"handsome son"
"liberated (spiritual parallel to Nirvana)"
"wealthy protector"
"my angel, my envoy"
"descendant of the victorious one"
"descendant of the dark challenger"
"fair-haired hero"
"son of Iain (John)"
"bright-headed, strife"
"fair, white"
Similar sound: These names share phonetic patterns with Lean — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Irish Gaelic origins, giving them the same cultural heritage as Lean.
Rhythm: Lean is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.