Also are there any salt coins ??
Nothing that I am aware of! Venezuela president had started an oil backed cryptocurrency called Petro couple of years back and it failed immediately after the launch. We do have gold backed coins in the market as well which are also not doing great! The matter of fact is that, tokenization is not needed for everything. Every single asset doesn't have to be broken down into millions of small token asset so that it makes easier for everyone to hold it. It's not a necessity.
When there is no necessity, such tokens are bound to fail in the market. Crypto market needs consolidation and not bifurcation. This is the only way crypto market would survive the test of time. Tokenizing everything is like a palace built by cards that is too unstable!