I have quite a mix of chicks and no idea what any of them are. Except the naked necks those were obvious.
Thor, araucana chicks don't have rumps or tails - I think yours is an easter egger. My easter eggers (which I just LOVE) were also sold to me as araucanas by my local feed store - they don't know the difference. http://www.feathersite.com/Poultry/CGA/Arau/BRKArauTrue.html http://www.feathersite.com/Poultry/CGA/Arau/ACARumplTufted.html
Pic #2 - delaware (but I've never had delawares, so that's just a guess) Pic #3 - brown leghorn? It has a straight comb, yellow legs, & no muffs/beard, so I don't think it's an EE. Pic #4 - ?? looks like it has a pea comb, so that eliminates white leghorn & white rock Pic #5 - possibly a red sex link
Number 2 looks like my columbian wyandotts did, and the third one looks like my dark cornish did, cute babies! They look like FUN.