Boston sits next to 3 phonetic neighbors — Austin, Benson, and Preston are the closest matches by sound. Most share Boston's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"Botolph's town, market town"
"home power, ruler of work"
"long hill, ridge"
"valley settlement"
"son, born of"
"one who helps"
"enduring and beautiful"
"son of"
"arrow maker"
"dove (short for Callum from Scottish Gaelic)"
"gift of God, blessed one"
"God has established (via Jachai root)"
"the fifth-born child"
"ruler of the world"
"dweller near the ridge"
"slender"
"poet"
"healer"
"battle strength"
"sea warrior"
Similar sound: These names share phonetic patterns with Boston — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old English origins, giving them the same cultural heritage as Boston.
Rhythm: Boston is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.