User blog comment:DemonicBeast/Official Announcement for Pokemon Rap Battles/@comment-5101200-20150627022030/@comment-5264252-20150627024120

If the Mach family was to be in a battle as a trio, I feel like they'd be better going up against the -urr family of Timburr, Gurdurr, and Conkledurr. Same connection, but with the Pokemon being direct evolutions of eith other instead of just happening to be in the same evolutionary family.