Hub sits next to 4 phonetic neighbors — Huck, Bub, and Jub are the closest matches by sound. Most share Hub's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"bright mind; shining intellect"
"God is gracious (from John/Johnny)"
"royal falcon"
"free, boundless"
"he is so"
"eternal blossom, beautiful flower"
"ancient strength"
"worshipper of Al-Hamid (Allah)"
Similar sound: These names share phonetic patterns with Hub — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Germanic origins, giving them the same cultural heritage as Hub.
Rhythm: Hub is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.