I've created a list showing all 153 new LEGO® elements added in May 2025 (so far), with links to which sets they come in so you can check for the ones you might be interested in. I said 'so far', as on 15 May we'll see the release of 72037 Mario Kart: Mario & Standard Kart and 31216 Keith Haring’s Dancing Figures, after which I'll update this list.
For those of you who prefer it, here is our list of May 2025 sets showing their new elements.