Camera Raw Hotkey Button for Ratings and Filter - Keyboard accessibility

I just want an easy toggle between photos of different ratings like in bridge while being able to see settings applied. 

Why
to filter between photos within a folder with different lighting settings (star ratings) from the same event, while still being able to toggle between other star ratings in the linear order they captured in. 

to edit photos within a folder with different desires of being kept or deleted 
marking lower ratings for photos with blur that i think i will delete, but may want to revisit during the workflow to compare to other images after some colouring has been applied. By toggling the filter by and show only, i can hide these photos from distracting me while i edit photos I think i would prefer to keep.  

situation -
On location -shooting photos at the same event and alternating between natural light and flash while shooting 
Post -Production - maintaining the liner workflow of seeing all the photos at the event captured in date order of date
but then being able to filter by photos that have flash or natural lighting

and don't start with Bridge or lightroom, i came to Photoshop ideas panel... not lightrooms.....
lightroom has an inferior user interface and terrible workflow by not creating sidecar files xmp acr
makes file moving and sharing difficult and I will not use it

May I ask what the benefit is of rating individually opened RAW files through Photoshop? No disrespect. I'm just genuinely curious.

Have you considered using Bridge or Lightroom? Both have easy to use versions of what you are wanting to do.

Photoshop>camera raw
there is no hotkey button for showing and or accessing the ratings and or filtering menu
There is hotkeys for other buttons when you hover over them, even the filmstrip button has a hotkey, but not the sort by or filter by button 

Can you please provide more details about what exactly you are trying to do?

How are you launching Camera Raw? Photoshop, Bridge, etc...