Knoxx sits next to 3 phonetic neighbors — Knox, Knocks, and Nox are the closest matches by sound. Most share Knoxx's Scottish cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"round hill, hillock"
"friend of warriors"
"forefather"
"great one, gift"
"healer (from Greek root of Jason)"
"bright, lively (Jay element)"
"reed clearing"
"descendant of the shouter (herald)"
"nobleman, earl"
"modern American creative name"
"Aromatic herb, salvia"
"famous warrior"
"from Laurentum; laurel-crowned"
"woodland near the elder trees"
"God has remembered"
"oak tree ford"
"bright day, day's light"
"island meadow"
"of the field, strong"
"exalted father"
"God is gracious (via Shawn/Sean/John)"
Similar sound: These names share phonetic patterns with Knoxx — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Scottish/Old English origins, giving them the same cultural heritage as Knoxx.
Rhythm: Knoxx is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.