Houston sits next to 4 phonetic neighbors — Huston, Hudson, and Hunter are the closest matches by sound. Most share Houston's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"Hugh's settlement, town"
"seven; divine completion"
"lion of God"
"son of the victor"
"spear rule"
"great tide, son of the sea"
"clay settlement, clay worker"
"surname origin unclear, possibly from place name"
"defender of men"
"traveler, one who leaps"
"maker of cases or boxes"
"peace, submission to God"
"good man, strong man"
"the king"
"white/pale (from Cas people)"
"measure, measurement tool"
"spear of God (from Oscar)"
"fifth"
"modern American coinage, son of Case"
"dexterous, adept"
Similar sound: These names share phonetic patterns with Houston — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old English via Scottish origins, giving them the same cultural heritage as Houston.
Rhythm: Houston is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.