Lots of sounds!
The first one is the magnets within the lid and case are grabbing. When you hold the lid slightly and let go you’ll hear that. Normal!
The second one is the hinge alignment or ribbon cable rubbing without having your system in front of me to hear it I can’t tell. This is one I would worry about as over time the wear could be an issue. I would get the AppleCar+ contract and maintain it.
The third is charging circuit changing state, a bit of emission is likely being picked up by your speakers. Nothing you can do to effect that again Normal.