[mbitsnbites]

I'd argue that x86 and IBM z/Arch are the ones that stick out among contemporary ISAs in that they need fairly complex fron-end translation into an internal instruction format.

ARM implementations that support both ARMv7 (both ARM mode and THUMB mode) and ARMv8 also need some kind of translation in the front-end, but recent ARMs (like Apple's implementations) don't support 32-bit mode and are simpler in that way.

Most other ISAs are much closer to the metal, although many implementations still do some level of translation in the front-end (mostly fusing/splitting certain instruction combinations for better efficiency). Examples: ARMv8+, RISC-V, MIPS, Loongson, TI 6x & 7x DSP, and of course most GPUs (and my own MRISC32 ISA).