Even if I create a new project without the starter content there are still a few animations and sounds. This may be an irrational fear but If I create a game and actually publish it and make a dollar could EPIC come back and sue me if they found some obscure sound file I didn’t know about. I know this might be a little ridiculous but I don’t want to work on a game and not be able to publish it when I’m done because I didn’t cleanse the folders the right way when I started. I’m not interested in the odds that they would sue me for a dollar I’m interested in how to properly and safely “start from scratch”.
Here you can read which content you are allowed to use: https://answers.unrealengine/questions/21462/can-we-use-stuff-from-samples-like-rocks-and-trees.html