I know the one is either a legit lady bug or an Asian beetle. The other I have no idea.
Image #3 is a Soldier Beetle. Generally beneficial, although they will eat other small beneficials along with the pests.
#2 the Asian Lady Beetle does bite, handle carefully.
#1 is some kind of fly.
Your fly is likely a variety of March Fly, just like the one I more recently identified here:
(yours is a clear-winged species)