Johannes sits next to 4 phonetic neighbors — Jonathan, Johann, and Giovanni are the closest matches by sound. Most share Johannes's German-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"God is gracious"
"all-knowing, wise"
"brown one, the brown bear"
"victorious people (from Gaelic connection)"
"ancestor's descendant"
"eagle bay, eagle inlet"
"dweller in the forest"
"beautiful fragrance"
"bramble, thicket"
"son of an earl"
"well-digger"
"fortune guardian"
"peace + ruler"
"may God protect, supplanter"
"divine gift"
"sword people, stone-knife people"
"powerful ruler, brave leader"
Similar sound: These names share phonetic patterns with Johannes — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Hebrew via Latin origins, giving them the same cultural heritage as Johannes.
Rhythm: Johannes is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.