Yes. Apple used PowerPC, and PowerPC was also in the Xbox 360, PS3, Wii, and Wii U. It was also widespread in embedded sectors like networking, automotive, and aerospace.

IBM eventually stepped away from the embedded market and eventually lost their foothold in consoles as well. While Raptor did offer Power9 systems at a somewhat accessible price point, the IBM-produced CPUs were still fundamentally enterprise-grade hardware, meaning they retained the high costs and "big iron" features of server tech.

Sort of, in the form of PowerPC, which was an Apple-IBM-Motorola (“AIM”) collaboration. It’s closely related to IBM’s Power line, but more like a predecessor than a sibling.