SO I guess the difference will be in how someone defines “traditional” and “novel”, and hat those entail.
They are descriptions of the ebb and flow of religions.
A “church” would be the parent body that is established.
A “cult” would be a breakaway group with “novel” ideas about the subjects generally accepted within the originating mother body.
A “sect” would be a “cult” that has survived over time, and has tended back in the direction of the “traditional” interpretations of the mother body AND has developed some “traditions” of its own.