Differences:

Doodle Fiction:
- Literary presentation where the author incorporates doodle writing and drawings and handwritten graphichs in the place of traditional font.
- Drawing enhances the story, often adding humorous elements.
- Examples include The Diary of a Wimpy kid by Jeff Kinney and Timmy Failure by Stephan Pastis.

Manga:
- Japanese word for comics.
- It is used in the English-speaking world as a generic term for all comic books and graphic novels originally published in Japan.

Graphic Novel:
- Narrative in comic book formats.
- Narative work in which the story is conveyed to the reader using a comic form.
- The term is employed broadly manner, emcompassing non-fiction works and thematically linked short stories as well as fictional stories across a number of genres.
- Archie Comics by John Goldwater and illustrator, Bob Montana, is a good example.
Similarities:

All of these genres incorporate drawings, illustration, or graphics in telling a story. This is just basic definition of each of the genre. Doodle Fictions use doodles for a more humorous and/or engaging effect, while both of the Manga and Graphic Novels use a comic book style.
Thank you
By: Mark Jay Olivera