I have had a bad time with an allergic reaction to what I believe is one of
these plants.

I only saw the first picture, but that was enough. It is poison ivy or one of
its close relatives. As the saying goes, "Leaves three, let it be."
Semi-uncleared areas are a favorite hangout. Since you got such a severe
reaction, you will have to be extra careful. However, if you need to mess
around in the woods, nowadays there are various pre-exposure compounds you can
apply to the skin, & other precautions you can take.
Iris,
Central NY, Zone 5a, Sunset Zone 40
"If we see light at the end of the tunnel, It's the light of the oncoming
train."
Robert Lowell (1917-1977)