Jaycob sits next to 3 phonetic neighbors — Jacob, Jakob, and Jacoby are the closest matches by sound. Most share Jaycob'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"
"strong, hardy"
"shining, brilliant"
"new year, fresh beginning"
"rhythmic flow, musical cadence"
"from the Isle of Bute (Bòid)"
"sky god, shining deity"
"wisdom and fire (fictional Fire Nation general)"
"modern invented name with noble, airy connotations"
"little deer (Irish)"
"Romantically associated with the poet Lord Byron meaning noble and ..."
"Wise one, a sage person"
"son of the famous ruler"
"tailor, one who cuts cloth"
"settlement on the ridge, keel town"
"little fire"
"mythical griffin creature"
"God is gracious (from Shawn/Sean)"
"God is gracious"
"born from the ocean, son of the sea"
Similar sound: These names share phonetic patterns with Jaycob — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Hebrew origins, giving them the same cultural heritage as Jaycob.
Rhythm: Jaycob is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.