Mahdi sits next to 4 phonetic neighbors — Mehdi, Madhi, and Madi are the closest matches by sound. Most share Mahdi's Arabic-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"one guided by God"
"little fire"
"God hears"
"prophet-king of wisdom"
"hunter"
"God saves, God is salvation"
"maturity, wisdom"
"the one who is rightly guided"
"blessed, enjoying divine grace"
"servant of the Most Merciful"
"manifest, apparent, visible"
"castle, fortress, palace"
"the little good one"
"owner, possessor"
"crown"
"throne"
"befitting, suitable"
"the almighty (divine attribute)"
"O human being (one interpretation)"
Similar sound: These names share phonetic patterns with Mahdi — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Arabic origins, giving them the same cultural heritage as Mahdi.
Rhythm: Mahdi is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.