Fals perc clown / Featherduster / Peppermint shrimp?

[SaltyMist]

In one tank there is just the clown and a featherduster, Im wondering if I can put in a peppermint shrimp or any other kind of shrimp that wont harm the featherduster and or clown fish.

 

Any suggestions on what shrimp to look for?

 

I may want to add some mushrooms or some type of polyps in the next coming months, so I'd want a shrimp that wouldnt kill those too.

 

Thanks,