Strange Sleep Paralysis

When I was about 11 years old my parents had split up and they moved into two separate houses. At my dad's house I got to pick my own room and I chose the master bedroom because it had a nice view of outside. I found out later on that my bedroom was the only part left of the previous house on the property that was built in the 1950's. I don't know anything about the previous house or what happened to it. After a few months of being in my dad's house I started experiencing something strange.

I called it sleep paralysis because I didn't know what else to call it. Every night as I would go to fall asleep my body would slowly become paralyzed. I didn't know what was happening and for a while I was scared but I soon got used to it. I would also only have this experience in my dad's house, never at my mom's. Then after my experience with what I believe to be the spirit of a little girl (if you want to know about that experience then go to my previous story) it suddenly stopped.

Years later I was told what sleep paralysis actually was and I realized what I experienced was not it. After reading many cases and stories about sleep paralysis I noticed they all had one thing in common. A dark shadowy figure either sitting on top of them or somewhere in the room. I also soon found out that when I fall asleep on my back no matter who's house I'm at I experience sleep paralysis but something is off.

After reading about all the different stories I expected to see dark shadowy figures but I never do. I've had hallucinations of my bedside light glitching out and a loud buzzing in my ear, a pillow case floating in front of my face and a tall blue blob walking towards me with the words El Chapo being repeated like someone whispering them in my ear. To get out of it I repeat "It's not real" over and over in my head or I can move around and slowly get out of it like I did as a kid.

I refrain from sleeping on my back so I don't have experiences like that again. But I always am wondering how come whenever I experience sleep paralysis I always have strange hallucinations like the ones I listed above. Is it normal that I don't see a shadowy figure or is it something else? Also if you have anything that could explain my experience with paralysis as a kid that would be very helpful.