Not table salt.

The best is Celtic Sea Salt. After that is various other brands of sea salt, Himalayan salt, kosher salt, canning and pickling salt.

How are these other salts better for you than table salt?

Table salt has problematic additives. One of the additives is an anti-caking ingredient. It is the reason table salt pours easily. Other forms of salt tend to clump up.

Sea salt also has additional micronutrients. It isn't just sodium chloride.

Not necessarily a huge issue if you are perfectly healthy, but it makes a surprisingly large difference if there is anything wrong that intersects with these chemicals in some manner.