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"
"anointed one"
"gift, good-natured"
"faithful, genuine, true"
"settlement by water"
"Southern American place name as given name"
"ruler of the home"
"Yahweh is my God"
"son of Hutch (Hugh)"
"city of Athena; city of wisdom"
"permanent, long-lasting"
"from Pacy-sur-Eure"
"great, vast"
"fierce, savage"
"descendent of Andrew; virile"
"thunder bear"
"hunter; huntsman"
"from Kelso (place name)"
"land beside the road"
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.