I think that your comment corroborates the Nobel committee's decision: "for the art of memory with which he has evoked the most ungraspable human destinies and uncovered the life-world of the occupation"
Despite what you say about a lacking plot, which you may have exaggerated, you still call him a "fantastic author." Which is either irony or there's something to that.
It's not necessary for a book to have a great plot, to be a great book. I haven't read any of this guy's work, but Murakami has a similar "thing" going on... the plots in his books are often fairly dull and leave a lot of plot-lines unresolved... but yet the books are very enjoyable and thought provoking. It's almost like it's the atmosphere that matters, not the plot itself. Perhaps this author writes something similar?
I would love to check out this author's work now.
You started out, perhaps, with other goals, but you've become tied up in explaining how and why everything happens.
Several of his novels do feature a man with a cat, and several novels feature distant women. But if I remember correctly, the only other married narrator is the protagonist in South of the Border, West of the Sun, and there is a character in 1Q84 who is married and divorced.
To say that the plots of any of his books have exactly the same plot would be a huge mischaracterization, though. The only two books that are even vaguely similar are Wind-Up and the earlier Dance Dance Dance (the last part of a quadrilogy about the "Sheep Man"); the latter feels a lot like a preliminary sketch for the vastly superior Wind-Up, in particular the fascination about hotel rooms and shared dreams. But the plots are completely different.
I recommend trying Wind-Up again. The first ~100 pages are difficult to get through at times (the narrator is infuriatingly apathetic), but one you get past that, it's an incredible page turner. I liked Kafka a lot, but Wind-Up is his masterpiece.