Ruby sits next to 4 phonetic neighbors — Rudy, Reuben, and Rubi are the closest matches by sound. Most share Ruby's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"deep red, the color red"
"overcoming, prevailing"
"man, free man"
"weaver"
"eighth, born eighth"
"the sacred crop"
"venerable, revered"
"son of Tray"
"man of prayer"
"modern American name blending Cody and -den suffix"
"from Vinci (a town in Tuscany)"
"source, wellspring"
"of America, American"
"flowing water"
"bright-headed"
"wished for child"
"independent; nonconformist; unbranded"
"land of the East Saxons"
"slender, graceful"
"crew, group, social organization"
Similar sound: These names share phonetic patterns with Ruby — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin rubinus origins, giving them the same cultural heritage as Ruby.
Rhythm: Ruby is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.