Dallas sits next to 4 phonetic neighbors — Dawson, Davis, and Dalton are the closest matches by sound. Most share Dallas's Scottish cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"meadow dwelling, water meadow"
"phonetic creation, no traditional meaning"
"Mack's spring, great stream"
"narrow strait, channel"
"God has given"
"frisky, energetic youth"
"valley dweller"
"one who shoots with a bow and arrow"
"Yahweh is my God"
"ruler of the home"
"sea, ocean"
"God has remembered"
"hillock, small hill"
"son of God's grace"
"Yahweh is deliverance"
"soldier, merciful"
"river, great river"
"God is my power"
"son of Owen"
Similar sound: These names share phonetic patterns with Dallas — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Scottish Gaelic origins, giving them the same cultural heritage as Dallas.
Rhythm: Dallas is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.