The above 3 are part of the neuropteran family Myrmeleontidae. The antlions are possibly named for the fact their larvae trap ants - not many insects prey on ants, especially at the larval stage!.
I have captured a Lapwing before - not too dissimilar to dragonflies except for the antennae.
This one is either an Owlfly or Antlion - hard to tell. It's about the size of a small dragonfly / large damselfly.
Any biologists in the house can explain that eye structure?