Reese sits next to 4 phonetic neighbors — Rhys, Reece, and Reed are the closest matches by sound. Most share Reese's Welsh cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"ardor, enthusiasm, fierceness"
"priceless one"
"wild rose bush"
"younger, the son"
"crow, dark bird"
"royal ruler"
"watchful, vigilant (via Casey influence)"
"greater, superior"
"exalted father"
"morning"
"powerful leader of the folk"
"Botolph's town, market town"
"lover of horses"
"dark-complexioned"
"one who carries loads, carrier"
"lover of hounds, hound-desiring"
"large homestead, great settlement"
"Yahweh has shown favor"
"he who holds firm the good"
"son of the king"
"short form of Wesley or Weston"
Similar sound: These names share phonetic patterns with Reese — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Welsh origins, giving them the same cultural heritage as Reese.
Rhythm: Reese is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.