Yes, I don't know why, but they all have different names...Skoda Fabia WRC (mk1) Skoda Fabia S2000 (mk2) and Skoda Fabia R5 (mk3) Maybe because of their rally parts?
Its because of the engine specs. Wrc is wrc od course. S2000 (short for Super 2000) is a wrc2 car with a 2.0 l na engine. R5 (rally 2) is just the newer regulation wrc 2 car with a 1.6 turbo engine