It’s the stock ST driver with extra functionality added for a few Schlage models (BE468/469, in both Z-Wave and Z-Wave Plus). The code from the stock driver is still in there that will support other fingerprints besides those Schlage models, but if you don’t have any of those Schlage models then I’d suggest just sticking with the stock driver. You can find the list of fingerprints supported by the stock driver here.