Right. SAE DC Level 2 is what CCS has been supporting over the last several years at 125A EVgo stations etc. The new Level 3 standard is obviously very advanced since multiple DC charger makers have announced products imminently ready for sale. My understanding is that the CharIN association has internally voted to approve new standards that support at least 350A at 1000V but as of early this year there was still internal discussion about increasing that to 400A or higher. These new standards have apparently not made it through the various national and international standards committees yet so they may not have been “formally” approved (which might be a condition for sale in some markets).
As I understand it, DC Level 1 just requires the J1772 plug without the extra two DC-only pins added by CCS. In other words, like Tesla connectors, the basic J1772 power pins could be used for either AC or DC at up to 80A. In reality, I have never heard of anyone doing DC charging over just the regular J1772 plug. My guess is that few, if any, J1772 vehicles support Level 1 DC charging without the CCS pins.
I’m not aware of CharIN planning to imminently support 800A charging. I suspect you were thinking of 400A.