Wilber sits next to 4 phonetic neighbors — Wilbur, Gilbert, and Wilfred are the closest matches by sound. Most share Wilber's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"resolute, brilliant"
"my messenger, my angel"
"variant of Silas (forest, woods, or asked of God)"
"little battle, warrior spirit"
"son of the grey-haired one"
"from the Cassius Roman family clan"
"sky (variant of Kai)"
"from the lake"
"valley dweller, from the meadow"
"lord, master"
"edge, border of land"
"tailor, cloth cutter"
"a group of birds, especially quail"
"modern Jax + Hebrew -iel (of God)"
"moonlight, lunar"
"one who knocks, morning star"
"dark one, dark-haired"
"dark one"
"compassion, forgiveness, clemency"
"God supports"
"precious, valuable"
Similar sound: These names share phonetic patterns with Wilber — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Germanic origins, giving them the same cultural heritage as Wilber.
Rhythm: Wilber is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.