When the Zilog Z80 was released, it was marketed as being mostly ISA compatible with Intel 8080, while also providing enhanced features.
Likewise, the CPU of the Nintendo Game Boy is a custom architecture designed by Sharp, (believed by the Game Boy homebrew community to be called SM83) which is mostly compatible with Intel 8080, while also providing some enhancements over it.
Are there any other examples of non-Intel designed CPU architectures which are similarly enhanced, mostly compatible derivatives of the Intel 8080?
My interest is in similar ISAs, as opposed to similar bus layout or timings. To put a threshold, let's say a CPU architecture implementing >90% of the 8080 ISA with binary compatibility. I'm looking to prove or disprove whether there are lesser known 8080 derivatives, other than the well documented cases of Intel's own continuation of the architecture, and the Z80 family of architectures. The goal is to figure out how unique the Sharp SM83xx architecture really was at the time, broadly being a 8080 derivative while also not being a direct descendant of Z80.