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"
"belonging to Christ"
"fictional Fire Nation prince name"
"honoring God"
"exalted father"
"vision during sleep, aspiration"
"Majestic, inspiring reverence"
"hare land"
"great tide, sea wave"
"from the rust-colored estate"
"light"
"from Laurentum (city of laurels)"
"God has given"
"initial-name, typically Andrew James or Anthony John"
"swift warrior"
"spiritual essence, animating force"
"Brook land, land by the brook"
"little fire"
"gate attendant, herald"
"strength and help of God (combined from Ezra and Azariah)"
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.