Obligatory shoutout to !anime@ani.social if you want a more anime-focused discussion. Of what I have watched (or seen enough of to make a judgement) there are a couple standouts. Note that I haven't really watched much western animation in recent years.
- Frieren: Beyond Journey's End - !frieren@ani.social
- The Apothecary Diaries
- Heavenly Delusion
- Delicious in Dungeon - !dungeonmeshi@ani.social - This one is done by Studio Trigger, so it is a bit stylized, but I adore the animation in this series
- Jujutsu Kaisen - I haven't watched this, but I have only seen tremendous praise for season 2's animation (despite the studio's working conditions)
- Demon Slayer - another show I haven't watched, but have seen plenty of gorgeous clips
Wildcard answer would be Star Wars Visions. Each episode is done by a different animation studio, so it can be up to personal preference as to which ones you like, but there are some great showcases in the show.
Edit: If you care a lot about animation quality, I would recommend checking out the SakugaBlog. It goes into deep dives on Japanese animation. For example, they did a whole running series on Frieren (link to the first article).
I work in a building right next to where Boston Dynamics used to test these things. We got to see them climbing over stuff, dancing, etc. all the time from our lab's windows. They moved to a different building not too long ago though sadly.