Using your crank signal, we can see that the speed of the engine is not the same between cylinders.
The engine speed differences, the intake pressure pulses, and the crank pulses, they can all be explained by the low compression in cylinder number 1.
The cause of the low compression is something that I believe we can't detect from the captures you had made. I can only see in there, from intake pressures pulses or crank pulses, that there may be some mechanical problem with the engine.
I don't believe we can say that this is intake valve related, exhaust valve related or piston related, just based on what you have given.
If someone can see more than that please fix my words... I only gave a quick look.
The problematic cylinder, should be the number 1, using your compression values, but because you didn't put a synchronization channel in the captures we can't say witch pulse is what cylinder.
We can use the cam signal for that, true, but before that I need to find a good waveform of that engine with some sync signal and the cam signal at the same time.
Maybe you should do a running compression waveform in cylinder number 1, instead of cranking compression. Or you can do 4 running compression waveform captures, and test all cylinders.
With that you may end up with information that may be conclusive, regarding intake or exhaust valves. You can also test the engine timing with that.
The low compression on number 1 could also be from a washed cylinder. Maybe, trying to do a new compression test with oil in the cylinder may rule that out.
I needed to use the freq math function for this crank signal. The crank math function doesn't work very well in your capture. This is something that I have notice before in some captures I had made. Not really a major bug, but at least we can say that the crank math function is not very robust. Or, I'm doing something wrong...