Pseudo-realistic. The Sims 4 went too far in the cartoony direction. I do like the way Sims look, but I hate how bright and saturated environments are, how fake trees, rocks, etc. look, and I LOATHE how blocky and flat objects look.
My favorite game in terms of graphics is The Sims Medieval. It has the perfect balance of realism and stylization that Sims 3 and Sims 4 failed to achieve (one being a tad bit too realistic and the other way too Pixar-like):
https://i.imgur.com/9dGCzVt.jpg
https://i.imgur.com/dYBvXyN.png
https://i.imgur.com/jRza75V.jpg
https://i.imgur.com/UR5TIUU.jpg
https://i.imgur.com/cZnmtvG.jpg
https://i.imgur.com/QmDxTud.jpg