Erich sits next to 4 phonetic neighbors — Eric, Erik, and Erick are the closest matches by sound. Most share Erich's German-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"eternal ruler, ever powerful"
"ash tree"
"to be filled with wonder and admiration"
"dark warrior, dark brown champion"
"ruler of the people"
"strength, honor"
"little blind one, the blind one"
"son of Owen"
"protector of peace"
"one who lives near a pool or stream"
"royal court attendant"
"divine stream (Jor = stream + El = God)"
"divine gift"
"son of David"
"dweller by the red river crossing"
"modern coinage, no historical meaning"
"chief, spear warrior"
"rainbow"
"godlike strength"
"red-haired counselor"
Similar sound: These names share phonetic patterns with Erich — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old Norse via Germanic origins, giving them the same cultural heritage as Erich.
Rhythm: Erich is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.