Fisher sits next to 3 phonetic neighbors — Fletcher, Frasier, and Fischer are the closest matches by sound. Most share Fisher's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"fisherman"
"western enclosure"
"alert, watchful"
"God will add, God will increase"
"supplanter, one who follows"
"son of Nicholas (via Cole)"
"highest point, God's place"
"helmet of will, guardian"
"plum tree (unrelated homophone)"
"the cleansing one"
"great one, straining force"
"reed island, island near the clearing"
"defender of men"
"colt keeper, young horse handler"
"God is my help"
"help, helper"
"acquired, possessed"
"God is gracious"
"reborn, born again"
"from the River Kelvin, narrow river"
Similar sound: These names share phonetic patterns with Fisher — 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 Fisher.
Rhythm: Fisher is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.