Unidentified Roach Species

Below are some pictures and descriptions of a species (althought it may be more than one species) of cockroach that inhabits my back garden in NSW, Australia. I found 2 adults under a log, one 'flat' one around 4 metres above ground under the bark of a Gumtree, and 2 adults, 2 different sized 'fat' ones, and a 'flat' one identical to the one found on the tree, all in an old brickpile. The photos were taken on 5mm grid paper so you can get an idea of the size of each. Apologies if the picture sizes are too large, but I felt the detail might be needed.
News Flash!I think the winged adults are a species of either Calolampra or Molytria, and the very bottom ones are a species of Laxta. I think...

This is what I think is an adult female of the species. It can't fly, and the abdomen is a lot fatter than that of the suspected males. It can climb well.

This is what I think is the adult male. It is very active and fast, can and will fly. The wing covers extend well past the end of the abdomen. It also can climb well.

This is a very interesting one. It is really flat (possibly a juvenile male?) and will flatten itself onto the ground and you can't pick it up. It can climb quite well and moves slowly.

These are all some juveniles, possible females? they are fairly fast, but cannot climb too well.