I know from direct experience which one’s are possible and which one’s are simply imagination to encourage the disciple to practice the sadhana.
It is entirely possible that the ones you have verified are only as far as your current abilities go. I would recommend you remain open to the others as well, because by starting to believe the others are nonsense, you are limiting yourself to the level you are already at.
There are various siddhis that appear the deeper the states of mind you go into(i.e., the deeper the level of prakriti you enter) From what you describe I think you are still only on the surface level. But you have mistaken this to be the limit. If you want to progress further you are going to have to keep an open mind. Patanjali says ignorance is mistaking the unreal for the real, the false for the truth and pain for pleasure.
am aware of this. But one should be careful to become deluded by such an understanding. The quantum laws are just one aspect of the laws which are functioning in the universe, they are the building blocks of the atomic. At a scale larger than the atomic, the laws are diametrically opposite. And that is what has created a great confusion amongst the scientists, how these laws can be diametrically opposite and yet part of the same existence. Many people have been clinging to the findings of the quantum world to support their own beliefs and ideas, but without understanding that they do not help you to come to more knowledge, but only to realize how ignorant one is about the existence in which one lives.
There is only confusion because scientists are refusing to get rid of classical physics because they cherish the objective and real world too much. It is impossible that the universe would behave a certain way at the microscopic level and then the complete opposite at the macroscopic level. No, it behaves the same and can be explained in terms of quantum mechanics. So far we have been limited by our technology in using QM for large objects, but now the situation is improving. Now QM can be used to work with larger objects as well. What this basically means the old theories of there being separate physical objects suspended in time and space are wrong, reality is not like that. Rather, reality is a single and coherent unit, where everything is interconnected and exists as a wavefunction of quantum vibrations. Everything you see around you is just a phenomenal form as rendered by your senses, it really is just a wavefunction and is interacting with everything else in the universe at once.
You are going to have to at some point abandon these beliefs you have of a physical universe with time, space and matter. It will hold you back from progressing.
As I have pointed out several times on this forum already the idea of separability and reality has long been falsified by quantum physics. There is no such thing as a real and objective existence. This is what allows for technologies like quantum teleportation, quantum levitation, quantum tunneling and quantum energy extraction. In the future we will being using these technologies openly. All of these quantum technologies are basically what Patanjali is describing that can be achieived when you reach a certain level of mind in yoga.
Again I am not sure what level you are at, but it does not sound like it is too deep.