Something engaging, easy-to-read, but you’ll still be glad you read it in 5 years?

Hi, I'm pretty easily distracted at the moment with a lot going on in my life, but I'd like to reinstall a basic reading habit again because I think it will be important for my wellbeing. I'd love some recommendations for my first novel in a few months?

I'd especially like recommendations for a book which is relatively short, engaging and easy to read, but which is a bit more meaningful and thought-provoking than a Jack Reacher or Tom Clancy novel, or even a Slow Horses novel.

I'd put the following, which I've already read, in the same general category:

Thousand Cranes (Kawabata)
1984
Culture series (Iain M Banks)
Portrait of Dorian Gray
The Death of Grass
Do Androids Dream of Electric Sheep?

For extra triangulation, here are some novels which I've enjoyed a lot and found rewarding and in some way meaningful which are not in that category, either due to length or being not particularly engaging or easy to read:

Golden Notebook
The Master of Go
Enigma of Arrival
Dune series
anything by Jane Austen

Thank you in advance for any suggestions!