I've got a book out that details 134 melodic sequences, but that's more like a reference book than a study or etude book.

https://www.amazon.com/dp/1696447682

The book that comes immediately to mind is Guitar Aerobics by Troy nelson.

I occasionally come across somebody on YouTube selling books of Etudes like this guy. I don't know if that meets your criteria. If so, there are tons of people doing that sort of thing.

A series of books that are really valuable but unknown by many are Barry Galbraith's Jazz Guitar Study Series. Volumes 1 is a collection of major scale based single note studies. Volume 2 is a collection of harmonic minor and melodic minor based single note studies.