Even if Microsoft does really love Linux, I'd rather want to know which Linux they love: a generic one such as any popular distro out there, or rather their own

Even if Microsoft does really love Linux, I'd rather want to know which Linux they love: a generic one such as any popular distro out there, or rather their own version of Linux, which could be a frankenpenguin where some obscure proprietary technolgy, no matter how small, would magically make their software run "better". I am 100% speculating, of course, but if I was in Microsoft pants and wanted to kill Linux because it makes essentially impossible to achieve domination in some context (server, embedded, mobile, etc), once realized I can't destroy it for failing many moons ago to understand its potential at step 1 of "first they ignore you..." , the best alternative would be to embrace it, pollute it discreetly injecting closed technology in key areas (all it needs is a key driver or library), port some great software to it with seemingly innocuous strings attached to the proprietary parts that will make it run better or run at all, have its users love my software and get used to it, make its use appealing to business users as well (offering discounted pro support as an example), acquire game companies and port their titles as above, etc. Once I have say the 20 most used apps depend on that closed blob or technology, I'd be ready to roll out my own distro which of course by being the favorite one among "normal" users will be the one dictating other Linux distros future. To make it short, Microsoft will indeed love Linux, although not before making Linux one of their products. As I wrote, that's pure speculation, but think of it when the first "best run on WSL" Linux software comes out.