I think there are 2 batteries (company size) of either PGZ-95 or PGZ-09 and then a battery of a SAM missile vehicles, like either the HQ17 or HQ17A.
I 'think' this was stated before that the ADA Battalion structure in the Combined arms BDE in the forum.
I also think it is the 'desire' for the PLA Ground Army for the HVY CAB to have the HQ17 and the Medium to have the HQ17A, but production levels and priorities for the PLA dictate which units will get what. I think that is why we see such a variety of systems within the PLA CABs for quite some time.
No if someone wants to volunteer and keep track of the units spotted with the new 'Gucci' vehicles and gear, by all means have at it.
Just my two cents
I think the heavy CABs use the tracked HQ17 generally. Not sure if there are still many HQ7 around.
Medium CAB will I think use the new Type 08 SPAAG but not sure if it's in service yet.