Literally all you need to know

Team Rocket: is an actual gang that wants money with a hot dad for a boss
Team Aqua & Magma: environmental extremists with bosses that experience sexual tension 24/7
Team Galactic: literally tried to destroy the universe because old-looking boss is edgy
Team Plasma: PeTA with an ugly dad for a boss and a son who did nothing wrong
Team Flare: Mass genocide and nice suits