To the corys species. You might have two, I would need to see the fish in person or have very clear photos. If you can capture them on camera when they are motionless it would probably give us clearer photos. Sometimes one has to just sit still in front of the tank, camera at the ready, to get the best shot.
There are 4 remarkably similar "spotted" cory species that are frequently mis-identified in stores; Corydoras julii, Corydoras trilineatus, Corydoras leopardus and Corydoras punctatus. All 4 are in our profiles and it mentions how to tell them apart. You can't always go by the photos in the profiles, since all 4 are quite variable within the species. So far scientific thinking is that they are individual species with variated patterns, but it is possible that some of the variations may turn out to be distinct species in time.
The corys in the photos in this thread are definitely not Corydoras julii, nor C. punctatus. I think some of them are C. leopardus, which is easily identified in life by having a longer snout rather than the more rounded snout of the other species. The patterning is usually much more distinct too, as it is in your fish. Some of them do seem to have a long snout, but the snout is blurred in the photos so I am not positive. One of the fish does not, at least it doesn't appear to be in the one photo, so they may be mixed. You might have better luck by studying the profile info and photos while observing your fish in the tank.