Jarrell sits next to 4 phonetic neighbors — Darrell, Terrell, and Jarrod are the closest matches by sound. Most share Jarrell's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"spear rule, lord of the spear (via Gerald)"
"ruler of the estate"
"blue crested bird"
"good man"
"descent, to descend"
"independent"
"creative American combination name"
"resolute protector"
"ray of light, counsel"
"fortunate protector"
"wise, all-knowing"
"a vow, pledge, divine assurance"
"slender, narrow"
"from the craggy hills, little hill"
"glory in battle"
"just, righteous, fair"
"fiery one"
"defender of men"
"God is gracious"
"tumult, noise of battle"
"from the sea"
Similar sound: These names share phonetic patterns with Jarrell — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Germanic origins, giving them the same cultural heritage as Jarrell.
Rhythm: Jarrell is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.