I also have a t480, mines running Ubuntu but unfortunately I’m giving it up for a new MacBook Air. The touchpads on the thinkpads are beyond horrible after using macs for many years, it’s finally too annoying for me to keep going :(
The closest to a mac touchpad I have seen so far has been the Dell XPS touchpad, which imo is hands-down the best touchpad experience on a non-mac machine.