I've been a very happy Slite user for over 5 years now, and it's the only SaaS I've heavily recommended.
Their fantastic editor and clean design originally is what made me love them, as it makes writing documentation that looks good require very effortless. These makes it easy to kept Slite updated and relied on by others for information.
Slite's use of AI is interesting and helps making information further accessible. My favourite feature still has to be collections though.
I've tried other tools for team documentation such as Wiki.js, Notion and also Microsoft Loop but every time I have missed using Slite, either due to the friction to write/editor experience, the poor visual design/spacing or just due to a lack of the many little useful features Slite has.