German sits next to 4 phonetic neighbors — Hermann, Germain, and Jermaine are the closest matches by sound. Most share German's Spanish-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"brother, kin"
"man from the mountain"
"belonging to the Lord, of God"
"Yahweh is God"
"defender of men"
"forest"
"priceless, praiseworthy"
"brave power"
"my God has helped"
"of the Julian family (Jupiter-descended)"
"ruler of supernatural beings"
"shortened form of Aristotle: best purpose"
"the fifth"
"one who frees men"
"venerable, revered"
"of the sea, of the lake"
"gift of Yahweh"
"little warrior; little of Mars"
"land of mountains"
Similar sound: These names share phonetic patterns with German — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin origins, giving them the same cultural heritage as German.
Rhythm: German is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.