There are hundreds of species of social spiders: https://en.wikipedia.org/wiki/Social_spider

Wow, thank you! I obviously had no idea!

Although, in terms of numbers, according to that Wikipedia: “Several permutations of social behavior exist amongst the 23 species of spider considered to be quasi-social out of some 45,000 known species of spider”

Impressive that there's a wiki article on precisely that topic.