Niles sits next to 5 phonetic neighbors — Miles, Giles, and Lyle are the closest matches by sound. Most share Niles's Irish-rooted cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"champion, winner"
"knife, cutting blade of a plow"
"herder of sheep, shepherd"
"of Sean"
"cloth merchant, fabric trader"
"to guard, to protect"
"bringer of light, luminous"
"visionary dreamer"
"beginning, origin, creation"
"descendant of the spirited one"
"heavenly, royal, exalted"
"from the hollow farm"
"to guard, to keep watch"
"modern invented name"
"temple of the soul of Ptah"
"place by the wide ford"
"steep rock face by a crossing"
"my God (short for Elijah)"
"dark one, descendant of the dark one"
Similar sound: These names share phonetic patterns with Niles — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Irish Gaelic Niall origins, giving them the same cultural heritage as Niles.
Rhythm: Niles is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.