Sherman sits next to 4 phonetic neighbors — Sheridan, German, and Herman are the closest matches by sound. Most share Sherman's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"shearer of woolen cloth, cloth cutter"
"anointed one"
"the hay town"
"invented modern name"
"white, fair-haired"
"long life, age"
"a million (aspirational wealth, abundance)"
"bold, brave"
"army of the people, warrior of the nation"
"honor of God"
"noble and ready"
"young man, boy"
"son of consolation"
"noble John"
"son of Jay, supplanter"
"God is gracious"
"from the island of ships"
"God is salvation"
"dry place, sunny place"
Similar sound: These names share phonetic patterns with Sherman — 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 Sherman.
Rhythm: Sherman is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.