If anyone was to tell you they could guess the strain from a picture, they're lying. You can provide a semi-accurate guess as to the general genetic makeup, ie: pure sativa, pure indica, or a hybrid. All of yours appear to be a hybrid, some showing stronger sativa characteristics, the first ones in particular, and the others leaning toward a stronger indica, but thats about it. No way on earth can you guess the strain without knowing where the seeds came from for sure. Like the genetics of BOTH parents.