[Groxx]

yea, hosted-mediawiki was my immediate thought. cheap or free, basically the same kind of permissions/etc as any other.

and 100% agreed, self-hosting is usually not a good choice for a small company, and cost is basically not an issue beyond ~10+.

Notion is an interesting one. I wouldn't personally call it a wiki, but I can kinda see why some would. but the performance and cost and and etc combined with feature-lock-in that Notion has would put it pretty far down the list for me too (though probably still well above confluence), and possibly completely rule it out (which confluence avoids).