Most fighters don't but at least some do. Cards, Woodblocks and power-up band are included but they must function as them in Smash (Isabelle, Terry, Ryu and Ken's cards do, but the Mario Sports cards don't)

Pikachu and Mewtwo I put as Technicalities because while they do have another amiibo (Detective Pikachu and Shadow Mewtwo) they don't work for smash in the same way.