In practice, as long as the source samples are licensed (which involves compensating various parties, the last of which is the artist

), there is no need to credit the source. You see this in modern music: each song does not contain credits too all the samples it licensed from other artists. Modern commercial music generation platforms already license high-quality samples (e.g., Meta, Udio, Suno, ...), which is why they exist in the first place (the music industry is super litiguous).
For personal and non-commercial use, however, none of this matters.