Monty sits next to 4 phonetic neighbors — Monte, Monts, and Marty are the closest matches by sound. Most share Monty's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"pointed mountain, hill"
"God is gracious (related to Yohanan)"
"fair, white, bright"
"modern invented American name"
"throne"
"lion-hearted, brave"
"modern American invented name"
"son of the brave one"
"fallow land, meadowland"
"great river (geographic)"
"son of the ridge dweller"
"advice, counsel"
"from Galloway"
"God is my rock"
"descendant of Grey"
"narrow strait"
"passionate, ardent"
"little rock"
"son of Kenneth / son of Coinneach"
"peace"
"divine, of the god of wine"
Similar sound: These names share phonetic patterns with Monty — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old French/Gaulish origins, giving them the same cultural heritage as Monty.
Rhythm: Monty is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.