What do Mobile Sync icons explain?

[Rob_Cullen]

These I know-

But What are these three? Can someone clarify please? Or provide a link that explains all.

    

{Moved from Lightroom Cloud to Lightroom Mobile & Apple TV Forum by Moderator}

[Ecphotographer]

Before I report a bug, I think it would be helpful to know what these icons mean. I am using LR for Ipad, and the icon is now a cloud with a white dot.