Unofficial reports indicate that Israeli companies deliver over 60% of military drones worldwide. Drone manufacturers from Israel lead in commercial use as well.
The major known drone companies do not always allow or desire to have their products known to the public. The earliest innovations were often hijacked and until technology can be secure from industrial espionage and theft, it will remain a hidden art. The Chinese have a storied reputation for stealing technology and unauthorized use of developments done by others. Likewise, the non-Western industrialized countries, headed by Russia and sadly by India, also have been taking (stealing) technology.
But as the list of suppliers increases and competition rationalizes, you will need to be looking at trade publications and attending trade shows to keep updated and current. If you are unable to do so, here is a brief update of what’s new, what’s developing, and where the leading drone companies are showing and doing.