Just checked YR, and the three (!) I checked all have substance which have Sulphur in it. The element, as part of a larger molecule. Pure Sulphur in a shampoo is not used as far as I know Considering we are dealing with mostly organic chemistry this is not really a surprise.
To name a few substances I found:
Ammonium Lauryl Sulfate
Disodium Laureth Sulfosuccinate
Sodium Methyl Cocoyl Taurate
I suggest to do it yourself, it's very simple and cheap to make soap and shampoo.
It's only oil, soda lye and a soap calculator that you can find online.
It's been 5 years now that I did not buy any soap or shampoo. I take 1h every 3 month to make enough for this period of time.