Troy sits next to 3 phonetic neighbors — Roy, Trey, and Drew are the closest matches by sound. Most share Troy's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"from the city of Troy"
"from the rocks"
"strong, healthy"
"son of marsh-dwellers"
"peace, submission to God"
"healer, physician"
"dark-haired, tawny"
"thankful, grateful"
"young lion"
"from Antwerp"
"high, noble"
"male duck"
"young dog, whelp"
"brave warrior (later folk etymology)"
"wine stone"
"right-handed, skillful"
"ruler of the world"
"helper, one who helps"
"people's victory"
"continuous improvement (via Kaizen)"
"watchful, vigilant (via Casey influence)"
Similar sound: These names share phonetic patterns with Troy — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Greek origins, giving them the same cultural heritage as Troy.
Rhythm: Troy is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.