as for the resources you mentioned, the structures in Case in Point and Victor Cheng are not good enough nowadays.
As for Victor Cheng, if you start with a structure that is product, company, competitors and customers, you simply won't impress your interviewer. As for Case in Point, you have too many structures, not always MECE. They could have been good 5-10 years ago, but nowadays the level in a consulting interview has raised (partially because such books have become mainstream thus all candidates have access to them). As a consequence, you would have to refine them further to have a good performance in a case.
If you want to improve on the structuring part, I would recommend you either:
1) Invest time in doing good cases (ideally a minimum of 30, knowing that quality is more important than quantity) to develop/refine your own structures or
2) Book a coach/ ask help to current interviewers that can support you specifically to work on structuring and avoid generic ones
Hope this helps,