Historical fiction that focuses on alternate US History/Presidential History Timeslines not name 11/22/1963

While I do have 11/22/1963 on my digital TBR, a criticism I've heard is the book doesn't go into many of the long-term consequences/outcomes. I'm very interested in alternate presidential-based history timelines, anywhere from roughly 19th-20th century. I'm also open to other areas in the world such As Spain, Croatia, etc. I appreciate authors who [...]