I like picture #4
Everything is vented.
We like to see a combo for the vent if it's on it's back and within six feet.
The way it is shown does all of that.
If the lav is near the toilet, and you have 2" venting, then you can throw in a 2"x1-1/2" santee on the vertical and it would be wet vented over the toilet. That would be one way to have the lav closer.