Optimal Build priority for raising GDP

Usually, my GDP rises steadily when I expand construction sectors and their input chains (like tools, wood, iron, etc.). But I’ve hit a wall in several games: once I can’t take on more credit or support further construction expansion, my economy starts to stall.

To keep things going, I often switch to building things like logging camps or fisheries to depeasant my population. Sometimes this helps, but other times GDP stagnates and I don’t see much return.

What are the best buildings or strategies to focus on for GDP growth without relying on expanding the construction sector further?