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"
"father of height"
"younger, the son"
"sea fortress, sea friend"
"God strengthens, Yahweh is my strength"
"black gemstone"
"God is my judge"
"one who is learned"
"Lord (via Kyrie element)"
"from the green valley"
"illustrious through nobility"
"from Rome, the Eternal City"
"enthusiasm, ardent"
"soldier"
"ruler of the world"
"river that swallows all rivers"
"descendant of Madan (little dog)"
"resolute protector's son"
"defender, protector"
"brave in battle"
"dexterous, adept"
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.