Daxx sits next to 3 phonetic neighbors — Dax, Dacks, and Drax are the closest matches by sound. Most share Daxx's French-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"town of the waters (French place name)"
"swift as a deer"
"drawn from the water"
"island"
"brave, courageous"
"peace-giver, one who pacifies"
"land of Eoghan (Owen's territory)"
"to travel leisurely"
"dark one"
"noble defender (speculative African root)"
"new house (via Xavier/Basque)"
"son of David, from Hebrew Dodavahu (beloved)"
"settlement by ash trees"
"from Artagnan, a village in Gascony, France"
"let's go (phonetic echo of Italian 'andiamo')"
"king + world (folk etymology)"
"lake colony, Roman settlement by the pool"
"from Thracia"
"variant of risen (past tense of rise)"
"God is gracious"
"modern coined name; possibly related to Jacob (supplanter) or Jakari"
Similar sound: These names share phonetic patterns with Daxx — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have French origins, giving them the same cultural heritage as Daxx.
Rhythm: Daxx is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.