They all look like subs to me, some look pretty inedible though, just think... if they were storebought mushrooms would you still eat them? The older they get the more infested with insects they get too, yummy! The third picture is a nice shot, i love the look of subs the day their veil breaks. Remember the colour variation between the stem and the gills, once you've locked that into your brain IDing subs is a breeze.