I have to use a Mac, a Linux, and a windows laptop. Three different keyboards. Then I have a couple of different external keyboards at the office, a couple at home, and a couple at my partners where I’m spending weekends. I basically have three modifier keys, A,B,C (that I don’t understand the rational behind - but thanks, I learnt a few things from this thread) that I have to try -in turn - whenever I want to use a shortcut (not exactly a shortcut any more). There isn’t a day goes by that I don’t want to burn it all down and start from scratch building a new keyboard/OS. Or run vim on the metal and use that as the OS, or switch to voice control, or mind control, or anything!