Apple still sells the iPhone SE 3. Rumor has it that the next iPhone SE will lose the home screen button but retain the same size. The camera isn't as powerful as the iPhone 13/14/15 lines but I find that it does fine in low light and takes the same exceptionally beautiful photos in good lighting. It has portrait mode as well.
It's not that much of a trade-off in terms of features or capability and it has the small size you'd expect.