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"
"luminous circle, sacred light"
"son of Jeffrey, son of God's peace"
"narrow, a strait"
"inheritance, bequest"
"man of power on the hill"
"enlightenment, calm clarity"
"God is salvation"
"little raven"
"son of James"
"watchful, vigilant (via Casey influence)"
"work and power combined"
"son of John"
"one who makes wooden tubs and casks"
"one who helps"
"son of the praised one"
"son of the red-haired one"
"from the rye field"
"watchful, vigilant (via Casey)"
"venerable, revered"
"crew, group of companions"
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.