I think any is fine as long as you put a pre-filter on the inlet, Finnex makes a small one (Finnex PX-150), if the tank isn’t that big, shrimplet would get into it but it’s kid of clear so seeing them was much of a problem to get them out
Maybe someone more shrimp experienced can chime in, but I think a canister filter might move too much water around and stress out your shrimp. Even if you have something restricting the filter inlet I can still picture it pulling in baby shrimp and pinning them to the nylon.
I have a similar filter for my big tank (not shrimp) and it does pump a lot of water.
OdinsGhost 
A piece of nylon stocking or similar fine-mazed material on the filter intake will do the trick
I think any is fine as long as you put a pre-filter on the inlet, Finnex makes a small one (Finnex PX-150), if the tank isn’t that big, shrimplet would get into it but it’s kid of clear so seeing them was much of a problem to get them out
Maybe someone more shrimp experienced can chime in, but I think a canister filter might move too much water around and stress out your shrimp. Even if you have something restricting the filter inlet I can still picture it pulling in baby shrimp and pinning them to the nylon.
I have a similar filter for my big tank (not shrimp) and it does pump a lot of water.
Can’t go wrong with a Eheim 2213.
Put a sponge over the intake, have the output slightly slanted towards the surface of the water, job done.