Merrick sits next to 4 phonetic neighbors — Garrick, Merritt, and Derrick are the closest matches by sound. Most share Merrick's Welsh cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"ruler of the sea"
"victory of the people"
"roof maker"
"cheerful, optimistic"
"brave in battle, vigilant"
"ewe herder"
"new, young"
"who is like God"
"Zion variant, promised land"
"little fire, fiery one"
"lowlands"
"God is gracious (via James/Jacob etymology)"
"the younger one"
"royal power, royal ruler"
"resolute, crafty"
"golden, precious"
"beloved (from David)"
"father of peace"
"helpful one"
"from Dayton"
"light"
Similar sound: These names share phonetic patterns with Merrick — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Welsh (Meurig) origins, giving them the same cultural heritage as Merrick.
Rhythm: Merrick is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.