Not all EE's have muffs/beards, but most have the green legs and some form of pea comb(which indicates a blue egg gene) but it depends on what the cross was and with hatchery chicks you'll probably never know what the cross was. The possibilities of the genetic crosses are almost endless...
I've read to put them just above the head of tallest bird then provide bricks blocks or something for the shorter ones to step up on....I do the block of wood or bricks in my coop with a regular waterer.
Correct. No way!
I do not think that is an EE......no beard, no pea comb(blue egg gene indicator) and no green legs.
Strange comb-not sure what it is flat like wyandotte but not quite, her breast feathers looks like my Welsummer pullet.
Ditto carolinasculpture, you'll probably just have to...