According to Wikipedia, LANY is an alternative rock band.

This classification feels wrong, even in consideration of how hazy and debatable the term "alternative" is in the context of music. But the pop group, based in Los Angeles by way of Nashville, do make songs most fervently loved by melomaniac teen girls fond of labeling things as alternative or "counter" for the sake of feeling quirky or different—so a superfan's editing of their Wikipedia page likely explains this inaccurate categorization.

I say this all not dismissively, but knowingly, as I, myself, was a 19-year-old girl just a half-decade ago, living through a phase in which anything mainstream or popular deeply offended me—and enjoying a band like LANY, DIY but only faintly left-of-center, felt like a betrayal of hipster-dom.

So I, too, was the kind of fan who would hide my favorite bands' pop identities behind other descriptors. They weren't pop, because plain pop was basic. They were indie pop, or alt-pop. They were superior.