What are the most important trade jobs?

I'm trying to understand which trade jobs are seen as most critical right now. Whether it's because they have a big societal impact or because they're always in need— which ones top the list?

There are several trade jobs that are in high demand and have a significant societal impact due to their essential role in maintaining critical infrastructure, improving public health, and driving economic growth. Here are a few that top the list:

1. Electricians: As the world becomes increasingly powered by electricity, electricians are more important than ever. They install, maintain, and repair electrical systems in homes, businesses, and factories, contributing to everyday life and economic activities.

2. Plumbers: Good plumbing is critical for sanitation, public health, and the environment. Plumbers install and repair water supply lines, waste disposal systems, and related appliances and fixtures. Their work plays an essential role in providing clean water and safe waste disposal.

3. HVAC Technicians: These technicians install, maintain, and repair heating, ventilation, air conditioning, and refrigeration systems. Given the extremes of heat and cold in different parts of the world, their work is critical for indoor comfort and safety.

4. Welders: Welding is a vital skill in a lot of industries, particularly in manufacturing and construction. Whether it’s building bridges, ships, or aircraft, welders play an integral role in the creation and repair of metal structures and components.

5. Solar Photovoltaic Installers: As renewable energy sees more adoption globally, the need for solar PV installers is rising. They assemble, install, or maintain solar panel systems on roofs or other structures, contributing to sustainable energy solutions.

6. Wind Turbine Technicians: Similar to solar installers, wind turbine techs play a significant role in green energy solutions. They install, maintain, and repair wind turbines, and are instrumental in the transition towards cleaner energy sources.

7. Automotive Technicians: With hundreds of millions of cars on the road, mechanics and auto technicians will always be in demand. As vehicles become more complex and reliant on computer systems, skilled technicians are needed to service and repair them.

It's also important to note that while these jobs are currently in high demand, the future of any profession is tied to advances in technology, environmental changes, and shifts in societal needs and government policies. Therefore, it's advisable to stay informed about industry trends and continuous learning opportunities.