In the Service Manual (LAN p33 and following) they have tables of "messages" (not MsgIDs) that are communicated, and From and To.
You might start looking for the data that you want there. If it happens to be listed, the From and To might help us identify which CAN bus.
If it is not there ... it might be more difficult, or just not there at all.
See SOC/GID-Meter and CAN-Do Info
2011 LEAF, 2014 Tesla S85
2018 & 2019 Tesla Model 3
Solar PV: 33 x 225W -> 7 kW max AC
Craigslist: Xm5000Li Electric Motorcycle