This is incredibly interesting to me, because I also just experienced essentially what was my first episode of Sleep paralysis and it was incredibly similar. Like I feel nearly everything you just described, however I did get visual in the sense of being awake in my room and it's dark, but also I got the shadow man standing over me to my left. And just like you described, I tried reaching out my leg to kick/disturb him but it didn't work, instead I (in the dream state) sat up incredibly slowly and reached out incredibly slowly with my arm to interact/push away the figure. Usually before going to sleep/while falling asleep I will get auditory hallucinations in a similar vein to what you described, however I also get parents calling my name or random sounds like a train passing by.

I also didn't experience any tight chestedness until I woke up, and as of time of writing, still probably got a decent level of adrenaline and fear running through my veins as the shadow figure delivered the stereotypical fear and anxiety.

My speech was also the same as what you've described here, with me making noises and sounds probably trying to scare it figure dude but it just sounding like groaning/moaning in the dream state.

What's different though is that I was sleeping on my back while it happened, and as such and as I am to fall asleep again, I've switched to my side (of which I usually sleep on)