A very interesting theme, my friend 
The Bauhaus had a lot of influence on my professional development and I particularly like minimalist design, but minimalism that is not to be confused with design poverty. So of the three buildings, I prefer the building of the EuroTours Travel Company in Austria. Its simple design, but with a great sense of aesthetics and a brilliant concept involving the company's mission, catches my attention. The EuroTours Travel Company building is created not only to house offices but to generate admiration because its design stands out from the rest of the boxes, as you describe the room buildings in Jordan, which is finally one of the most widespread urban concepts in the world for its simplicity of form and ease of construction. Notice how each floor is divided by a strip of windows and the floor above is differentiated to resemble the deck area of a large ship.
During my career, I also understood what you call "client-dictated designs" and it is logical that the client determines what he wants and even establishes the guidelines. There are clients who are very intelligent and also have excellent taste. These aspects influence so much that the final design is probably enhanced by that additional guidance, concluding in a beautifully proportioned piece, however, I have also come across clients who do not even know what they want and also want to direct everything in real-time, which in the end constitutes the worst experience and the resulting piece lacks all grace and is very faded. The latter I have long refused to do. I ask all my clients for a briefing on their requirements before starting any project and I also encourage them to tell me about their particular preferences, which helps the result to be a professional design, but with all the characteristics of the beauty standard that the client handles.
RE: Beauty is in the Eye of the Beholder