PC Magazine was very focused on PCs. You wouldn’t read about Suns, or NeXTs, Amigas, or even Macs. Byte did a nice review of the Archimedes, the first ARM-based desktop. The ecosystem was a lot more diverse back then than other publications would make you think.
That's true, but it was never with the breadth and depth of BYTE. They had in-depth issues about many different families of computers and operating systems. You wouldn't see articles about Transputers detailing experimental OSs for running on them. I remember the first time I read about Python was on BYTE.