"We are made of star stuff" - surely not all the particles?

That version is actually out of date. Wikipedia has a better version: Nucleosynthesis periodic table. But note that even that doesn’t cover every possible way nuclides are generated. One well known case is carbon-14, used in radiocarbon dating. That is made by cosmic rays, but it’s such a small fraction of the total carbon around that it doesn’t get on the table.