What things are deemed "important" when crediting someone for something in your game or other project, and what things are just good sport to bring in?

It's my first jam, and my first game, so I don't really have experience with accreditation, can someone help me?

Hey !

I guess anyone that had a direct role int he game's development (devs, artists, composers & sound designers...) are important to credit.

Additional credits can include inspirational or supportive figures, minor contributions to the game,  or playtesters for example !