2 things I'm missing

When you hold down the arrow and all 3 sliders appear, the ringer and notification volume are 1 in the same slider....the media slider is for music and video audio. Can you make the ringer and notification volume different volumes? I see people have done this with assistant, does it actually work? Thanks

I have 3 separate sliders
 
I'm pretty sure with stock Android, upping the ring volume ups the notification volume to the same percentage. They're tied together. You can't have ring at 100% and notification at 25% at the same time. You can tell Assistant to adjust either but both are going to get moved. There are probably apps out there that fix this but I never considered it a problem so I can't recommend specifics.

Not true. All 3 can be adjusted independent of each other on the Pixel phones.
 
Not true. All 3 can be adjusted independent of each other on the Pixel phones.

Since I was only talking about ring and notification volumes I'm not sure what you mean by "all 3". If you mean ring, media, and alarm volumes can be adjusted independently, then yes, I agree.