"Working with the CPU is the Arithmetic Processing Unit (ALU), which is responsible for mathematical tasks and is driven by the CPUs microcode."

So close.

Although, was there a CPU without microcode since the 8080?

The original Narch didn't have any microcode, but I'm not sure if its successor "E2K" still didn't. Narch trapped to a software management whenever it wanted something microcode-ish. That was in 1997.

I'm trying to remember if old SPARC had microcode (in e.g. Sun-4/280), and I cannot. It's been decades.