Here are some recommendations! Musically for the last 10 years she's been doing mostly slick and polished pop, except for the two albums she released during the pandemic which are a bit more intimate and folksy. She often writes about (romantic) relationships in a very intricate way (mostly autobiographically), which is a big draw for her fanbase I guess. But she also has some more varied stuff to offer.

Out Of The Woods (I prefer the original version, not the re-recorded one) - Really big, frenzied popsong that just builds and builds.

Seven - Beautiful and melancholic song about childhood friendship.

Would've Could've Should've - This is very Taylor Swift in its subject. A song about losing her innocence and still regretting that relationship years later. Full of angry and confused feelings.

Anti-Hero - You have maybe heard this one. A song reflecting her public perception that's equally sad and humorous.

Only The Young - Not necessarily one of her best but it fits this thread as it's an anti-GOP song.