Charlie sits next to 4 phonetic neighbors — Charley, Charlotte, and Harley are the closest matches by sound. Most share Charlie's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"free man"
"of Mars, warlike"
"victory of the people (short for Nicholas)"
"flowing body of water, stream"
"Jehovah is my God"
"hound lover, dog enthusiast"
"God is my power"
"river, great river"
"God is gracious"
"mild, peaceful"
"God has given"
"home ruler, estate ruler"
"From the English surname 'son of the grieve (estate overseer)' or '..."
"merciful, gentle"
"strong-willed warrior"
"ever powerful"
"one who carries"
"variant of Jason"
"Lord"
"settlement of the raven's people; raven-town"
Similar sound: These names share phonetic patterns with Charlie — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Germanic origins, giving them the same cultural heritage as Charlie.
Rhythm: Charlie is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.