Khoi sits next to 3 phonetic neighbors — Coy, Koi, and Roy are the closest matches by sound. Most share Khoi's Vietnamese-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"group, collective"
"elder brother, wise child"
"rock, stone"
"triumph, conquest"
"true, faithful, loyal"
"strong, forceful"
"son of Kartikey, the god of war"
"upright post, beam"
"who is blessed"
"variant of Cassius"
"little fire"
"may God protect"
"narrow, strait"
"invented modern name"
"heavenly, of the sky"
"farmer, earthworker"
"Christian believer"
"of the forest, woodland dweller"
"greatest conqueror"
"medicine of God"
"noble, strong"
Similar sound: These names share phonetic patterns with Khoi — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Vietnamese origins, giving them the same cultural heritage as Khoi.
Rhythm: Khoi is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.