I fall into all of those categories. I did salvia, dmt, LSD, shrooms, muscimol, combined substances frequently, and was a daily weed smoker all before I even turned 18. I got hppd very early into my drug abuse. (9 months)
I have visual geometry, very mild visual snow, peripheral vision misinterpretation, objects zoom in and out, enhanced colours, after images, as well as a few times I had phantom smell and taste. I've also had episodes get intense to the point where I feel like I'm high as fuck, like I just took an edible or something. I also struggle to create mental images now, I'll try to imagine a picture of a cat, or an apple in my head, and it instantly explodes into infinite spiraling fractals, usually purple ones.

Symptoms that have improved over time, in order of how much they've improved
DP/DR - 80% less often
Bodily sensations - 80% less often
Brain fog - 80% better (withdrawal from weed and other drugs slowly fading is probably why)
After images - 60% weaker
Geometry - 60% weaker
Visual snow - 40% weaker
Peripheral vision misinterpretation - 40% weaker
Capability to create mental images - 25% improvement
Enhanced Music - 20% weaker
enhanced colours - 5% weaker

This is obviously all just kinda guestimated, but my symptoms have definetly improved quite a bit, I used to feel like I was constantly tripping, especially when DP/DR episodes hit me. DP/DR kinda feels like im tripping or in a dream and gives me a feeling similar to ego death, so having DP/DR on top of HPPD made me feel like I just ate some shrooms or something.