The [[KC Compact]] uses the U880, which is an unlicensed clone of the Z80 manufactured by MME. It was the most widely used microprocessor in the German Democratic Republic. [https://en.wikipedia.org/wiki/U880 Source]
The [[Aleste 520EX]] uses the КМ1582ВМ-0100, which is a Soviet clone of the Z80.
The ASCII [[R800]] that powers the MSX TurboR is a seriously beefed up version of the Z80: