Jacob sits next to 3 phonetic neighbors — Jake, Jacques, and Jacoby are the closest matches by sound. Most share Jacob's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"Supplanter; one who follows at the heel"
"stone"
"hedge dweller, from the enclosure"
"glory bright"
"hero of God, man of God"
"sea"
"the Lord heals"
"anointed one"
"young warrior"
"son"
"brave in war"
"son of Jack"
"God is willing"
"gift of God; Yahweh has given"
"son of the sea"
"merciful, gentle"
"light, bright one"
"independent thinker, non-conformist"
"lion-hearted, brave"
"gracious, merciful"
"battle"
Similar sound: These names share phonetic patterns with Jacob — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Hebrew origins, giving them the same cultural heritage as Jacob.
Rhythm: Jacob is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.