Mcfayden rhymes with:
faden, adan, aden, baden, bladen, blaydon, braden, faden, gayden, graden, graydon, haden, hayden, haydon, heyden, heydon, kaden, kaydon, laden, layden, madan, maden, maiden, mayden, menhaden, paden, raden, saidan, slayden, slaydon, thaden, tjaden, vaden, yaden
Mcfayden sounds like:
macfadden, macfadyen, mcfadden, mcfaddin, mcfadin, mcfadyen, mcspadden, mesopotamia, mesopotamian