I have only ever seen Coquille St Jacque as a scallop dish since coquille is the French word for scallop. I live and grew up in the South and have never seen it. A really really good recipe for it can be found in Anthony Bourdain’s Les Halles cookbook. My go to recipe and should be online easy.
I don’t speak French, so I didn’t know that coquille was how you say scallop in French, but that would make sense. When I looked online some of the recipes were for just scallops and some were for a combination of scallops and shrimp.