Ruger sits next to 3 phonetic neighbors — Roger, Ruger, and Ryder are the closest matches by sound. Most share Ruger's Old High German-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"famous spear (from Hrodgar)"
"beautiful valley"
"marsh dweller"
"God has given"
"rocky cliff, crag"
"Dutch diminutive form of Adriaan"
"pebbly place, bald clearing"
"thankful, God has heard"
"generous, tolerant"
"dear, beloved"
"bird, one who flies"
"white, fair-complexioned"
"phonetic blend (possibly new house, or river)"
"little man, warrior"
"held by the heel"
"rule, measuring rod"
"bridge homestead"
"slender, narrow"
"advice, counsel"
"guiding spirit"
"bright color, vitality"
Similar sound: These names share phonetic patterns with Ruger — 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 Ruger.
Rhythm: Ruger is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.