Mac sits next to 5 phonetic neighbors — Mack, Max, and Jack are the closest matches by sound. Most share Mac's Scottish cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"son of"
"one who serves"
"royalty, ruler"
"asked for, prayed for"
"church official, rule of law"
"son of Will (William)"
"western settlement"
"warrior, man"
"tile maker (short for Tyler)"
"wisdom, good sense"
"healer (via Jason/Iason)"
"wood, forest"
"deliverance of God"
"healer (if derived from Jason/Kason)"
"winding valley"
"ardor, enthusiasm, fierceness"
"supplanter"
"sea-born, born of the sea"
"spear ruler (from Gerald)"
"sea fortress, sea friend"
"dweller by the woods"
Similar sound: These names share phonetic patterns with Mac — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Scottish Gaelic origins, giving them the same cultural heritage as Mac.
Rhythm: Mac is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.