Darth sits next to 3 phonetic neighbors — Garth, Darby, and Bart are the closest matches by sound. Most share Darth's Modern fictional - Star Wars-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"dark lord (fictional Sith title)"
"man of prayer, full of goodness"
"Spear ruler; variant of Garrick meaning one who rules with a spear"
"God will uplift"
"one who stands forward, leader"
"noble one, of patrician birth"
"God is salvation"
"enduring, steadfast (via Dante root)"
Similar sound: These names share phonetic patterns with Darth — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Modern fictional - Star Wars origins, giving them the same cultural heritage as Darth.
Rhythm: Darth is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.