I have installed niresh Mojave on my HP EliteBook 850 G1 laptop. everything worked fine except battery percentage not showing and track pad not working. i tried ti install the kexts manually but id didn't work. also i tried high sierra also same problem with additional not being able to boot on it's own without USB. i installed clover in post but it didn't work. anyway niresh mojave is better in my case only the battery status is problem the track pad can be replaced by mouse. so try it guys. know am going to try Catalina !