Charleston sits next to 3 phonetic neighbors — Charlotte, Charlston, and Carleston are the closest matches by sound. Most share Charleston's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"settlement of free men"
"high, exalted, sublime"
"my God, elevated, ascended"
"follower of Christ"
"victorious people"
"place of gathering; sanctuary"
"short form of Aurora (dawn)"
"pledged to God, my God is an oath"
"little dear, most precious"
"peace (from Irene element)"
"poetic vision"
"gentle one"
"beloved, dear"
"green island, Erin's land"
"woman from Judea"
"descendant of Angus"
"little girl, maiden"
"to speak kindly, to order"
"love, beloved"
"variant of Asia (the continent)"
"lily flower"
Similar sound: These names share phonetic patterns with Charleston — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old English origins, giving them the same cultural heritage as Charleston.
Rhythm: Charleston is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.