Hi Jake, used the IOReg from the one you linked in the previous page.
Catalina, OC 0.5.9
I haven't patched SMBUS though via SSDT though, and I'm not sure if that's gonna affect my IOReg output
Edit: Forgot to answer your question
It is an elan ps2 touchpad, but I'm not sure if there's an SMBUS connection I can hook into.
The gdrive link with the jumping cursor upon gestures is my video which I posted on reddit.
Edit 2: I've tried all 4 kext versions. V1 actually works well for my gestures ! I didn't patch smbus or anything. Since my touchpad i