How maftools oncoplot deal with Splice_Site mutation

Question

[lincaijin1994]

I've got a sequencing output dataframe. The summary of the variant classification is listed below

            3'UTR           5'Flank             5'UTR   Frame_Shift_Del 
              250                13               133               487 
  Frame_Shift_Ins               IGR      In_Frame_Del      In_Frame_Ins 
              354                 1               651                92 
           Intron Missense_Mutation Nonsense_Mutation  Nonstop_Mutation 
             8793              6385               517                 2 
              RNA            Silent       Splice_Site           Unknown 
              278              3062               225               181

I created a oncoplot based on this maf file and the output oncoplot presented the variant classification of Frame_Shift_Del, Frame_Shift_Ins, In_Frame_Del, In_Frame_Ins, Missense_Mutation, Nonsense_Mutation, and Splice_Site. But I found that most literature present the oncoplot only with Missense, Truncating, and InDel. So I just want to know if these literatures reclassified the Splice_Site mutation into Missense, Truncating, or InDel?