Whittaker sits next to 3 phonetic neighbors — Whitaker, Walker, and Thatcher are the closest matches by sound. Most share Whittaker's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"dweller at the white cultivated land"
"stream, ford"
"resolute will, helmet of will"
"earth, sea"
"one from the sea"
"he will laugh, laughter, one who laughs"
"thicket keeper"
"beloved of Yahweh"
"permanent, perennial"
"vivid, alive"
"permanent, long-lasting"
"holly tree"
"conscience, heart"
"son of the fair hero"
"God is gracious (from Javon/John roots)"
"gift of God"
"bright star in Aquila"
"the free one, freedom"
"strengthened by God"
"of the Adriatic, the dark sea"
"battle settlement"
Similar sound: These names share phonetic patterns with Whittaker — 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 Whittaker.
Rhythm: Whittaker is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.