Gunther sits next to 3 phonetic neighbors — Gunnar, Hunter, and Gunter are the closest matches by sound. Most share Gunther's German-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"battle warrior, army in battle"
"God is gracious"
"son of Jack"
"gift"
"lord of the estate"
"from Devon, poet"
"his peace"
"heron bird, large wading bird"
"one who moves smoothly"
"warrior's settlement, warrior's town"
"young wolf, wolf cub"
"bold place, wild one"
"Han dynasty, Chinese people"
"white heart, blessed heart"
"son of encouragement"
"he will laugh, laughter, one who laughs"
"Southern American place name as given name"
"son of Kel"
"Mann's people, son of the man"
"hay meadow"
"son of Anders; son of the manly one"
Similar sound: These names share phonetic patterns with Gunther — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old High German origins, giving them the same cultural heritage as Gunther.
Rhythm: Gunther is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.