You name the compilation and/or interpreter technique and there's at least one emulator that uses it.

A fair amount of 32-bit and later emulators do have JIT recompilation, but I'm not aware of any ahead-of-time translation unless that's how TeknoParrot works (you can run linux arcade games that use ELF binaries on windows with it for example), but I wouldn't call that emulation either way since the architecture is the same.

There are lots of emulation methods but interpretation is probably(?) the most common or at least very common.

Interpretation involves writing a VM that represents the state of various parts of the machine, and executes instructions that change the state of the VM, with varying levels of accuracy.