Mcaiden sits next to 5 phonetic neighbors — Aiden, Caden, and Kayden are the closest matches by sound. Most share Mcaiden's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"son of little fire"
"Rowan tree"
"little poet"
"descendant of Raghallach"
"to heal, healer"
"sea + beloved (Marion from Mary)"
"possibly inspired by Zion, meaning monument or raised up"
"wealthy protector"
"bright valley"
"prickly plant, briar patch"
"may He add"
"son of Ty"
"Maker of barrels and casks"
"one who carries the treasure"
"of noble birth"
"one who hunts with birds (falconer)"
"forever, always + wind/fighter (Ey + vindr etymology)"
"jasmine flower, protector"
"bright, splendid"
"fighting man's settlement"
"one who lays slates, roofer"
Similar sound: These names share phonetic patterns with Mcaiden — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Scottish Gaelic/Irish origins, giving them the same cultural heritage as Mcaiden.
Rhythm: Mcaiden is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.