Burke sits next to 3 phonetic neighbors — Birk, Berk, and Turk are the closest matches by sound. Most share Burke's Irish-rooted cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"from the fortress"
"powerful, excellent, good feeling"
"shield wolf"
"handsome, born of fire"
"brown-haired warrior"
"God is gracious"
"dark sea, dark one"
"son of Myer/Meyer"
"who is like God"
"spear"
"island"
"victory of the people (as short form of Nicholas)"
"chip off the old block"
"supplanter"
"clever, astute"
"my God is the Lord"
"my God"
"dark-haired one"
"morning glory, morning well (depending on kanji)"
"occupational name for a blacksmith or farmer"
"son of Matthew"
Similar sound: These names share phonetic patterns with Burke — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old French 'borc' origins, giving them the same cultural heritage as Burke.
Rhythm: Burke is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.