Zam's DNA cut will work for what you're describing as long as you like lots and lots of stacked leg. His Soft J design would also work. Stay away from anything in his minimalist trouser designs though because those are slimmer all the way through the thigh. Lost & Found is another option you might look at. Just follow the measurements from the seller/retailer though because she intentionally cuts many pieces to fit oversized and loose. The shape of the cut though is often similar to what it sounds like you're after.