I am now enthusiastic with salt prints. The look depends on the negative, exposition, paper, coating of the paper, etc..
Here is one of my latest salt print:
The same print after a bath in a 10% solution of coffee, i.e. 10 g soluble coffee for 100 ml water.
I tried to give the scan a very similar look to the original, but it is not 100% identical. I think the original has a better look.
This is my suggestion for your next salt print.