Trying to describe a niche genre of music

There’s a certain type of music im trying to understand better. An example, I forgot that you existed by Taylor. In the chorus there is some sort of wide type of noise. An instrument I guess. It sounds….bouncy, fat, wide. It’s also in the song miss independent by Kelly Clarkson. The only word I can think of to describe it is fat. It makes me think of a giant ball. I really Don’t know what I’m listening to but I wanna understand it better.

To get even more niche, I love alternative music. It’s My favorite. I love the band men I trust. They have song called lucky Sue where a similar noise is made. It’s stretchy, thick, fat, I don’t know. Another song they have is called tides and the same vibe is there. I want to find more songs like this.