Banks sits next to 4 phonetic neighbors — Blanks, Hanks, and Franks are the closest matches by sound. Most share Banks's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"one who lives near a riverbank"
"passion, fire"
"son of Owen"
"morning"
"holy, sacred one"
"little seal"
"descendant of the red-haired one"
"Lord, have mercy (liturgical)"
"God is gracious"
"victory of the people (from Nicholas)"
"thankful, God has heard"
"of the forest, wood-dweller"
"God has given"
"from the wetlands"
"little battle"
"courageous, valiant"
"the great river"
"administrator of justice"
"cheerful, pleasant"
Similar sound: These names share phonetic patterns with Banks — 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 Banks.
Rhythm: Banks is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.