Rabeinu Yona puts 9 categories of lying (1 is the worst). Discussion here relates to
4) People who fabricate stories merely for the sake of lying
9) People who change minor details when retelling an episode.
This is somewhat unexpected. I thought lying for the sake of it should be below items 5-8 (below).
I surmise is is because pointless lying shows love of lying and developing a habit.
5. People who hold out the promise of giving another person material goods while never intending to follow up on their promise;
6. People who intend to keep a promise but do not honor their commitment;
7. People who claim that they did a favor or a good deed for another when in fact they have not;
8. People who praise themselves for virtues that they do not possess;