Where you can find a list of every manga/book read in a book club on WK. (It won’t list all the later volumes of series read as part of a book club/off-shoot club.) The ones most likely to have a lot of vocabulary and grammar help is books read in the Absolute Beginner Book Club and the Beginner Book Club.
It should hopefully be possible to find a manga you’d like to read on the list. Yotsubato is fun, I’ve heard Flying Witch is about similar, Aria too except for the first few pages that happen to be SF heavy, but after that it is slice of life/every day vocabulary. I could name more, but almost anything on the list of ABBC and BBC should be fairly easy if you have N4 grammar ability. Anything below that makes it a lot more of a struggle, but not impossible, especially if you use the book clubs. As mentioned, even the finished ones will usually have people come back to answer questions of new readers. 