It's always so hard to name solid favourite things. But I suppose it does have to be Halestorm. It's not often that songs speak to me on a personal level, but a lot of theirs do, with their strong themes of being yourself wholly and unapologetically, especially if your identity or proclivities are deemed against the norm.
I think getting into their music when I did was a key factor in properly unlocking my sexuality and identity, because they made me feel safe to do so.