I had the same situation with a lot of protein powders back in the day. There are a good amount of whey powders now that filter out the lactose . I forget the brand I've gone through because its been a while but honestly if you go to the right supplement store you have lots of options. I'd make sure they don't add sweeteners-- especially sugar alcohols-- and that they do not add amino acids, and that they filter out the lactose.
Having said that, I'm surprised with all those intolerances you can handle L glutamine well. I don't know what it is, but L glutamine totally screws up my gut in isolation. That was the thing I realized most when supplementing whey-- if there were added aminos acids-- particularly glutamine-- the drink would make my life hell.
These days I eat a lot of beef, and eggs, and haven't found the need for a protein powder. Also, zinc is awesome but a lot of grass fed ground beef is loaded with it. My favorite zinc back when I supplemented it was "Bio zinc" by solaray. It is a hybrid of 3 different kinds of zinc with added B-6 for absorbancy. But.....since I've been eating more beef I haven't felt the need to supplement.