Well, I don't think there really are many more than listed here. Most drills, and their application, tend to center around one or two basic movements of the body. Here we are talking about manipulating the ski instead of the body which can be best described as achieved through a chain of overlapping movement patterns, many of which break down to singular facets that hold little relevance to obtaining high edge angles in of themselves. So, in other words, to work on obtaining dynamic high edge angles, work on fundamental skills such as balance, pressuring the ski, edging, rotation, angulation and flexion/extension, all of which are relevant to achieving high edge angles and have a good number of drills that can be found on line. The mastery of these skills is what will allow you to obtain high edge angles and, of course, other high performance outcomes that are best learned in stride with each other.
The beauty of ski development is that it is a highly complex and intellectually organic growth process that combines a very unsuspecting mix of resources: the human body and mind, ski equipment, gravity, slope and surface that undergo a spectacularly harmonious and organically complex integration that we call ski technique. Which BTW is why we cannot switch, add or remove any parts of ski technique like you are fixing a car, Here, every change you make has effect up and down the chain of movement as well as up and down the chain of turn phases. Start screwing with the natural order of this type of biomechanical development and your technique will end up with some kind of funk that'll be hard to shake.