A friend of mine is compiling a list of Islamophobic dog-whistles that the company she works for needs to keep an eye out for on their socials. I said I would throw the net out and see what I can find out.
A bit of a weird request I know, but I would like to think it will do some good.
The main ones I hear irl are "religion of peace" like Vampire says, and "rug/towel-head". There's also "sand people" from racist star wars fans