I don't see anything 'milky'. What you guys are calling milky I'd call fresh oil.
I see the front main as the primary leak. In the first pic you can clearly see the clean spot/fresh oil trace up to the bottom of the seal.
I'd replace it and the PCV ... it may be a blockage in the oil emissions system causing pressure and forcing oil out the seal, the weakest link.
I'd also replace or plug that open hole in the exhaust ...
Don't "think outside the box".
There is no box.
Do it correct, or do it twice.