Its perfectly clear that the version with $SINGUL_STRATEGY is not working. I have already told you it is blocked by KUKA due to unwanted behavior and henceforth not officially supported out of the box. You need to contact KUKA to get the secret activation method I mentioned earlier.
I do not get the problem people always have with contacting KUKA in the first place. Is it so difficult to pick up the phone and call them or send an E-mail?
Btw. your answer does not answer my question why you want to do all this tests. Every of the strategies has its advantages and disadvantages that might present themselves differently based on a specific program or task.
So once again: what do you try to achieve apart of having fun with the robot controller?
For example a possible answer would be: I am an ABB field engineer and want to benchmark KUKA systems 
What are your requirements concerning singularities: E.g. I need to pass with or without velocity reduction?
Also the best strategy always is to avoid singularities all together by a reasonable hardware setup considering a suitable tool mount.
Finally: Your videos do not work for me. I never use platforms where you have to register first to see content.
Fubini