That is mostly true many of the early RISC share a very common base as most of these people were sitting on top of each other. Sun nearly hired the MIPS guys bu

That is mostly true many of the early RISC share a very common base as most of these people were sitting on top of each other. Sun nearly hired the MIPS guys but they went of and did their own thing so they did SPARC. However it would be wrong to say it just, removed baggage, it also has and will add a lot of interesting ideas. They also spend a lot of time fiddling with details, how small you can make the decoder, op code layout for a modular design, how to avoid backing micro-architecture decisions into the ISA.