Rodrick sits next to 5 phonetic neighbors — Roderick, Rodrick, and Broderick are the closest matches by sound. Most share Rodrick's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"famous ruler"
"glory wolf"
"holy one (of Dewi/David)"
"army ruler, commander"
"gift of Isis"
"ruler of the people"
"beloved"
"army ruler (from Harold/Harald)"
"sea, ocean (via Kai)"
"from the spring or well"
"spirit of battle"
"combination of Kai (sea/earth) and -ler suffix (one who)"
"powerful giant, cosmic force"
"healer"
"ruler of the people"
"sacred name"
"constructed blend name"
"my covering is God; God protects"
"grace of Baal"
"of the Fabian clan"
"valley of the River Kent"
Similar sound: These names share phonetic patterns with Rodrick — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old Germanic origins, giving them the same cultural heritage as Rodrick.
Rhythm: Rodrick is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.