For anyone else using Linux of some kind but not very genre savy otherwise, X64 is for PC, ARM64 is Mobile, .deb and .rpm are specific things, if you use a version of Linux that uses them you should know, otherwise AppImage is a agnostic seeming thing that should work with anything, I only did like a handful of searches for this info, if anyone knows better please correct me on this. :>
Linux Mint Users: You want .deb