z/VM and PRSM aren't in the same category as System/38, AS/400 Lisp machines, stack machines, the iAPX 432, Common Lisp, the JVM, Burroughs Large Systems, etc.

z/VM and PRSM aren't in the same category as System/38, AS/400 Lisp machines, stack machines, the iAPX 432, Common Lisp, the JVM, Burroughs Large Systems, etc. z/VM and PRSM are just virtualising (relatively) mainstream hardware, fundamentally no different than what VMware/Xen/KVM/VirtualBox/HyperV/etc do. The rest are either (1) hardware architectures whose ISAs are much further from mainstream than 360/370/390/z is–aiming to provide high-level capabilities which are normally provided in software, making the distance between the hardware ISA and HLLs much smaller than normal; (2) software architectures which could be implemented in hardware (and occasionally were) to become instances of (1).