@Jain We do use more office style things, like docx/xlsx (via nextcloud). The problem just is that people dont work together, but just in the same time on different parts and so the resulting thing always feels disjoined and in need of another person to correct things. So I can say that it doesnt save up on time. :blobcatlaugh:
hedgedoc is something I know about but I have not used yet. I think it did had a different name at some point and that was what I have used, but not sure.