There are many groups among Shiites: ithna ashari, zaydiyya, ismailis, nusayris, alevi, akhbari etc.
Similarly, among wahabis, there are many groups.
Hamas is Ikhwani, while IS is salafi qutbi. Syed Qutb is however one of the progenitors of Ikhwanism too. The article seems to groups all...