Book recs for my nephew

I'm looking for book recs for my 13-year-old nephew. He has ADHD, like the majority of my family, and is having a difficult time getting into reading. When he does read, he's reading Captain Underpants and Friday Night at Freddy's. I'm looking for some recs that might help him get into reading novels, or more graphic novels. I'm great at picking out books for my nieces, but I have a harder time with the boys. Any help would be appreciated! If you read this, thank you for taking the time to read my query.