I think this may be algorithmic. Like steam gives suggestions based on what you have already purchased, and what other people who purchased the same games also like. Additionally it’ll tell you what your friends are playing if you friend them on steam. This sort of gives everyone a different picture of steam suggestions that is tailored to them. It might be a good idea to find older non-live service games you like, add them to a new profile or wishlist, and then see what new information pops up for you.