They were called "template-based" JIT and copy-and-patch approach is not new in this regard. The novel idea of copy-and-patch JIT was an automatic code generation via relocatable objects. (By the way, QEMU is indeed cited as an inspiration for copy-and-patch JIT.)
While I'm sure some people theorize that Fabrice Bellard is actually a pseudonym of a collective of 10x programmers, he is as far as I know just one person.