Well, I don't think Intel refers to their CPUs by name as Silicon. For better or for worse Apple decided to name their CPUs Apple Silicon (which I think is a lame name, but I digress), and that's what potential users are going to know them as.
For Intel-based Macs using something like Intel Core or Intel Core i-Series would suffice, but there's so many different SKUs and naming for Intel CPUs that it could get confusing too, though as far as I know all Intel-based Macs are Core i-somethings.
The complicated part is on Windows and Linux where if you call the x86 and x86_64 versions Intel, people with AMD CPUs would get confused, and then there's the whole 32-bit and 64-bit stuff that complicates it more (it shouldn't be an issue with newer macOS versions as it's 64-bit only). Leaving it them as-is on Windows and Linux and only adding ARM (e.g. ARM 32-bit and ARM 64-bit) when running MC on ARM could work too.
