Hi
1st pic def not, inner flesh is the wrong colour, it should be dark
2nd hard to tell, 3rd could be, they have more of a LC shape.
It is hard to spot them in isolation, you need find a good few hundred in a patch and once youve got a few that have the classic characteristics ("Taj Mahal" shaped top/clear nipple on top/green and kinda slimy when wet/pale ochre colour when dry etc...) then youve got some kinda reference point to spot others that arent so typical.
Damn i miss picking LCs...we picked all our fields to death, havent seen any for years!