Troi sits next to 4 phonetic neighbors — Troy, Roy, and Croy are the closest matches by sound. Most share Troi's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"from the city of Troy"
"God has been gracious"
"bouquet, bunch"
"modern coinage from la- prefix and -trell"
"strength of God"
"follower of Christ, anointed one"
"bold ruler, chief power"
"son of Ken, son of the bold"
"friend of the gods (Germanic tradition)"
"abbot, religious father"
"bearer of Christ"
"free man"
"one who tends a gate or hatchway"
"God has given"
"speed of God"
"from Milan, middle of the plain"
"son of Ay, moon's son (via Turkish)"
"from Grantham"
"son of the dark one (via Maurus)"
"fighter, battle"
Similar sound: These names share phonetic patterns with Troi — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Greek/Latin origins, giving them the same cultural heritage as Troi.
Rhythm: Troi is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.