I'm not playing through the game again to see if what you're telling is true. So I'll have to take your word for it.
But ethically speaking it's still INCREDIBLY unethical to create, promote or even share music made from Suno.
Suno, the company, has a joint agreement with Warner Music Group, so that they can use their ENTIRE catalog of music to train on.
If you want the entire list of labels, and artists under WMG, then I suggest you look it up. IT IS HUGE.