If you want to make your Ford Bronco Sport an impressive off-road cruncher, you will need to upgrade your shocks and your struts with a more robust set. You should also upgrade your control arms and your sway bars first as these are typically the ones to change first, especially after you go for a lift kit.
On the other hand, if you want your Bronco Sport to be as road-compliant as possible, you should focus your attention on replacing the shocks and struts with a softer set, your springs, your bushings, your wheel bearings, and your stabilizer bar.
Steel is a strong and durable material that is commonly used for suspension components because it is not expensive, but it can corrode which will shorten the lifespan of a specific component.
As opposed to steel, aluminum is a lightweight and corrosion-resistant material that is often used in high-performance applications. It is also more expensive than steel and can be more difficult to work with, but it is much cheaper and easier to work with than carbon fiber.
Carbon fiber is an extremely lightweight and strong material that is often used in high-performance suspension components. It is also more expensive than steel or aluminum and can be more brittle in certain environments.
Titanium is a lightweight and strong material that is sometimes used in high-performance suspension components. It is more expensive than steel or aluminum but offers excellent strength-to-weight ratio and corrosion resistance. However, finding replacement titanium and carbon fiber parts is much more difficult and expensive.