there are 5 types of thumbnail overlay
two of them can not be set using a DO command.
I bring this up because in thumbnail mode in certain folders I have my image editor of choice propriety file type pinned to appear at the top and because recently someone somewhere has decided to generate a thumbnail image of the first layer I cannot tell if it is an image or the propriety file (used to save layers, filters, etc.) unless I have Overlay with file icon on. But I do not need or want it on in certain folders. And a command (button) would come in useful.
Please add the highlighted overlays to the Set command.