In my team (also non-programmers) we're going for Google Docs in a folder structure. It's straightforward enough for most people and has all essential features.

In my team (also non-programmers) we're going for Google Docs in a folder structure. It's straightforward enough for most people and has all essential features. And my company went for G Suite so that fits well. I just wished Google had a tool (or view in Docs) to make a note rather than a letter-type document. More like Dropbox Paper, less like Word. At least to get rid of the paper width and page separation. For companies going for Office 365, Onenote is probably the best choice.