Luther sits next to 3 phonetic neighbors — Luca, Luther, and Tucker are the closest matches by sound. Most share Luther's German-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"famous army, warrior people"
"one who carves, wood-carver"
"handsome, fair one"
"chicken (separate Dutch usage)"
"Yahweh saves"
"of God, God's own"
"He has given (divine gift)"
"father of God"
"son of Case; from the marsh"
"rich friend"
"the Lord is my God"
"may God protect"
"God heals"
"who is like God?"
"fair, white, bright"
"from Clare (Suffolk)"
"royal power, royal ruler"
"ruler of the home"
"worshipper of Yahweh"
"firm, unwavering"
"mill town, settlement by the mill"
Similar sound: These names share phonetic patterns with Luther — 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 Luther.
Rhythm: Luther is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.