Venom is easily the most iconic and recognizable of Marvel's symbiotes, namely due to his relationship with Spider-Man. His popularity in the late '80s and early '90s saw the similar rise of his offspring/nemesis, Carnage. As with all good things, the concept was repeated ad nauseam with other symbiotes, although they weren't nearly as successful.
Source:https://www.cbr.com/venom-life-foundation-symbiotes-popularity-marvel/