It's great you don't have trouble. I don't have that confidence yet. I've been using a plant id app to check when I see it and I've gotten it wrong both ways.
> The leaves may be notched, round, or oak-like depending on what other foliage is around the poison oak plants. They may be shiny—or not. They may have a red tinge—or not. This is where the challenge of identifying these plants comes into play.
...
> The actual shape of poison oak's leaves change based on the environment it is growing in, with the lobes able to vary on the same plant.
https://www.verywellfit.com/poison-oak-photo-4020320
> The leaves may be notched, round, or oak-like depending on what other foliage is around the poison oak plants. They may be shiny—or not. They may have a red tinge—or not. This is where the challenge of identifying these plants comes into play. ... > The actual shape of poison oak's leaves change based on the environment it is growing in, with the lobes able to vary on the same plant.
That may be why I've found it hard to pin down.