The best pre-workout supplements typically consist of the following four key ingredients:
Carbohydrates - It fuels our muscles with glycogen as an energy source that will support our body with the right levels of energy.
Creatine - Every gym goers heard about this but what creatine really does is boosts muscle strength and is also a very good source of energy.
Branched-Chain Amino Acids - This fuels our muscle tissues it also greatly increases our muscle protein synthesis.
Caffeine - Caffeine has a fat a burning effect and will also make us feel alert and sharp, with higher levels of energy.
There are more ingredients that you could consider.
From my experience, Legion PreWorkout is the most popular pre workout supplement.