If you were hoping for a trifecta of titles where the anime and manga are radically different I feel this pick will sadly disappoint you. Flying Witch has a very consistent feel between its various iterations. No matter how your experience Flying Witch you will get a similar relaxed down home feel with vibrant magic, warm friendships , and hilarious family bonding. The manga provides all of this in spades and the anime merely uses the original as a spectacularly solid template.
Flying Witch is the exemplar of magical slice of life shows. It is hardly the first in the genre. Heck most of the original magical girl manga would actually be classified as magical slice of life manga if they were made today. The thing is if you want a title that perfect encapsulates the idea of slice of life with witches then there are few other manga that are so close to a platonic ideal. Other than Makoto and Chinatsu trying to be witches there is nothing even resembling an overarching plot but magic is omnipresent in the manga. This is not Kimagure Orange Road with its almost aggressive disinterest in its super natural aspects. It is a careful balance of the mundanity of country living and fantastical awe of magic. They are seemingly opposite ideas that blend together surprisingly well for a greater whole.