Google, Amazon and Huawei have their own in-house chips. Probably many more, because it's become way easier to make chips in-house. But of course they are still produced by TSMC or some other chip manufacturer.

AMD is not a chip manufacturer in the sense of having their own manufacturing, all manufacturing is outsourced same as Nvidia.
Intel, TSMC, Samsung are the main CPU manufacturers as in having actual factories. Then there are 4 companies manufacturing most of the RAM. Samsung, SK Hynix, Micron and a Chinese company I think it's called CXMT.