nvidia is the company that makes the most sense to buy Intel.
However, I would not be a fan of that merger and that would be too much control for a chip company to wield.
No, they aren't agnostic enough, but of companies available they probably are in the top ten.
Historically, and for the purpose of foundry grants from the US government the most logical buyer - for the US government - would most likely be former x86 license holder IBM.
They are one of the most agnostic suppliers to other tech companies in the world, even more so now, and would have all the expertise from their own POWER arch or relationships with other companies to help if they were deficient in any way to get things back on track.
It is amazing how many companies rely on intel that wouldn't be suitable to buy them, such as HP, Lenovo, Dell to get the ball rolling,. you have to wonder if with Sony's connection to US contracts and how their company was formed by the US in Japan if Sony would be in with a shout to buy Intel, where Samsung clearly wouldn't.