"Fancied-up" books. I don't like rebinding trade books for any number of reasons - bad design, boring paper, signatures (if extant) too fat, perfect bound... However, it is an established part of the trade. In the past two years I've (re)bound just those kinds of books as presentation bindings to their authors who were retiring as faculty. These are fun, if at times conceptually challenging.
More at
https://pressbengel.blogspot.com/2012/11/fancied-up-books.html
Also here: https://henryhebert.net/2012/08/28/how-to-fancy-up-a-book/