Jovian sits next to 4 phonetic neighbors — Jovaan, Dorian, and Fabian are the closest matches by sound. Most share Jovian's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"joyful, jovial (from the same root)"
"handsome, well-built, beautiful of form"
"modern invented name"
"builder, craftsman"
"bright, bold (from 'Kash' element)"
"may God protect"
"God is my help, my flock is God"
"flourishing, like a flower"
"rocky outcrop, tor"
"ash tree clearing"
"gentle wind"
"belonging to the night"
"new settlement"
"homestead on the rock"
"gift of God's grace"
"diverse mixture"
"varies by given names the initials represent"
"gift of God"
"realm of the dead"
"descendant of Braonán (moisture/sorrow)"
"son of David, son of the beloved"
Similar sound: These names share phonetic patterns with Jovian — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin origins, giving them the same cultural heritage as Jovian.
Rhythm: Jovian is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.