Apple: MOS Technology, Rockwell, Synertek 6502 > Motorola 68k / WDC 65816 > Motorola-Apple-IBM PowerPC / ARM 610 RISC processor > ARM / Intel x86 > Apple-SoftBank ARM

Microsoft: 8bit cpus > 16bit cpus Intel > 32bit cpus Intel / AMD / Alpha > ARM, MIPS, PowerPC, Intel / Freescale PowerPC > 64bit cpus Intel / ARM

I am sure there are more I am forgetting.