Look for an unbaffled PCV, a leaking intake gasket. Also post the pictures of the plugs if you don’t mind. I forgot, get a good look at the valve seals.
I can see that valve seals are present but can't tell condition.
If the engine was running, would it leave that much oil in the cylinder at shut down? I turned it over by hand 2 or 3 rounds with valve covers off.
