Any opinions or thoughts would be super appreciated. I'm at a loss.
I've dealt with a variation of car problems over the years but this is new. Quick summary:

• 240,000km
• PCV Value is good
• No leaks underneath (even went to a shop to check)
• Some minor smoke out the back when revving but not enough to warrant 1L per outing.
• Replaced valve cover gasket (no leaks now)

Compression results cold (dry/wet):

1. 170/230
2. 170/220
3. 175/235
4. 170/230

I've since read a bunch of different factors for testing. The amount of oil, with or without plugs, warm vs cold, so I may need to redo the test but what I did was:
Engine cold, plugs in, no fuel, 2 capfuls of oil for wet test, 5-8 turnovers until max. psi. The psi would jump by about 50 each turnover - e.g. 50,100,150,170

With these results I would suspect the rings or cylinders but how is going through that much oil possible without a big blue trail of smoke?