I'm afraid those lo-fi synths are 100% AI. Wherever you got them from should have disclosed it, and because your game uses it you also need to disclose it used gen AI. Also, you should credit your resources on the project page.
As that may be i read the copyright for them it said there was no need to credit the authors. Also I dont think they were AI so why would I disclose it to be AI. I made the music in a audio engine so they are still technically mine due to me manipulating the sounds sorry if you feel that way.
