Not a problem to be after the Popups. I was concerned that they might run over over over. I'd like one or two more members to join as well--I am in a four-person group and it's wonderful.
Full disclosure: Almost all of these I have read and considered them either four or five-star books, which is why I have recommended them. In fact, only a few of them I have not already read--I didn't vote for those ones because I didn't want to be a dictator, filling the stands with my own recommendations and then weighing the scales for them.
But War Brides is excellent as a portrait of the wartime Home Front in Britain. Night Over Water captures the tensions of that last few moments of peace in 1939, when anything could happen. The Guest List is a fantastic mystery with an excellent set of twists that I didn't see coming. The Passion of Artemisia I read when it was new and it stuck with me ever since as one of those really great books about women artists carving their way in the world. A Man Called Ove is an amazing book about the value of one human life that still kind of breaks my heart a bit. The Night Library is all about choices and their consequences. Girl on the Train unfolds slowly, so that at some times you think that the narrator is a horror show, but that makes the conclusion so extremely satisfying. Every one of these I would read again, but I am not the boss, and so I tried to limit myself to not do that. But if you were thinking about book recommendations, all of those work from me.