Rahmatullah sits next to 4 phonetic neighbors — Rahmatallah, Rahmat, and Rahmattullah are the closest matches by sound. Most share Rahmatullah's Arabic rahmat + Allah-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"mercy of God"
"little ruler"
"to buy, to trade, merchant"
"raspberry (fruit)"
"prince"
"from the barley meadow (topographic)"
"Inspired by the Japanese Kaizen philosophy meaning 'continuous impr..."
"pure, bright, shining"
"sensitive perceiver, artist of words"
"king who speaks wisdom"
"Blend of Fran (free man) and -yel (God); free under God"
"a magical charm or spell; also a curse"
"Water of life; the distilled spirit drink"
"immortal, deathless"
"one who illuminates"
"modern invented name, possibly sun"
"one warrior, lone warrior"
"outlaw, one who has been banned"
Similar sound: These names share phonetic patterns with Rahmatullah — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Arabic rahmat + Allah origins, giving them the same cultural heritage as Rahmatullah.
Rhythm: Rahmatullah is a 5-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.