Warner sits next to 3 phonetic neighbors — Warren, Walter, and Carter are the closest matches by sound. Most share Warner's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"army guard, protecting warrior"
"guide, leader"
"to light up, illuminate"
"ruler of the home"
"bold, riot"
"worth, worthiness"
"divine, of the god of wine"
"from the pool or marsh"
"alive, vital"
"spear, acquired"
"Yahweh saves"
"from the heath"
"noble lord, feudal warrior"
"tailor, cutter of cloth"
"descendant of Riagán"
"from Chester (place name)"
"reputation, esteem"
"brave spear, strong with a spear"
"descendant of the black-haired one"
"jaybird + euphonic suffix"
"from Airelle (a place in Normandy, France)"
Similar sound: These names share phonetic patterns with Warner — 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 Warner.
Rhythm: Warner is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.