Would be most curious what folder structure and naming conventions everyone is adopting for their projects, in particular the World Outliner and project specific assets in Content Browser?
Coming from a Unity background where I had to collaborate with many freelancers I think this is an often overlooked topic which can either help or hinder productivity.
Most important remark imo especially if you use marketplace assets is to create a folder with your projectname under the “Content” folder.
Keep marketplace assets within their own folders, don’t fit them into your “materials” folder or anything else. The folders become too big and impossible to manage. Use the search if you need to find some specific style of asset.
Having your own “projectname folder” also “protects” you from marketplace assets which don’t follow the guidelines, and fail to have a folder instead of direct /Materials /Textures etc. folders.
For programmers I’d look into modules. There are also developer-specific folders. However I must say that I haven’t used the engine with multiple people on same project.