Jersey sits next to 3 phonetic neighbors — Jesse, Jerome, and Jericho are the closest matches by sound. Most share Jersey's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"Geirrapos island, grassy island"
"one who deals in coal"
"heart"
"air, atmosphere"
"resolute protector (from Liam/William)"
"tree, oak tree"
"God given, divine gift"
"from the rust-colored estate"
"brave"
"the Lord saves"
"from the hill by the lake"
"the Lord is my God"
"possibly fire-derived (East Asian linguistic inspiration)"
"little warrior, of Mars"
"one who ropes (cowboy)"
"leopard, swift and fierce"
"stoneworker, craftsman"
"of January, born in January"
"variant of Tyson, firebrand"
"of the moon, lunar"
"divine discernment"
Similar sound: These names share phonetic patterns with Jersey — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old Norse origins, giving them the same cultural heritage as Jersey.
Rhythm: Jersey is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.