This doesn’t work this way.
I explained this here: Does stock Android even get Qualcomm/Mediatek updates? - #4 by SkewedZeppelin
Yes, older versions are missing hardening/security features and PSB patches, but they still must be patching issues in all previous ASBs up to the level they declare.
Android 12 and higher is still supported, although 12 will likely be dropped October.
I posted this here: Help understanding what data is commonly for sale - #2 by anonymous162
Most of those metrics are inferred.