The upcurled page badge means those images are virtual copies of other master images. Virtual copies are how you can make different adjustments to the same master image. The Copy x after the filename tells which copy of the master image you're hovering over while the part before the Copy x tells you the name of the master image.
Besides having virtual copies there are also several physical copies of the same master image: image.tiff+JPG, image-edit.tif, image-edit-edit.tif.
The virtual copies would be created when you have images highlighted, then right-click and choose Create Virtual Copy. The -edit is added whenever you use right-click Edit in Photoshop or some other external editor.
The fact all images look the same means you may not have made any adjustments, either in Photoshop or after creating the virtual copies, and maybe you had more images selected than you meant to when making the VCs.