Charlie sits next to 4 phonetic neighbors — Charlee, Charli, and Charlotte 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"
"trembling tree"
"my dream"
"strong, full-grown"
"work-power, industrious leader"
"lioness of God"
"reddish-brown earth pigment"
"ewe by the lake, graceful"
"bright, shining light"
"delicate, weakened"
"all, completely"
"straight beauty"
"one who will rise again"
"divine play"
"full of life"
"maiden"
"youthful, downy"
"noble strength"
"born of Juno, goddess of marriage"
"goddess of wisdom and warfare"
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.