What are you talking about I've never done a UOA? I do them almost every oil change on my wife's car.
Most of the reclaim oil I use come from her car.
Here's the UOA I never did on my wife's car. An example of oil that I do reuse.
Hyundai 1.8gdi hybrid engine recommend oil is 5w-20 and to change it at 7,500mi which is a fantasy.
There appears to be a little dirt or sludge around the bottom of the filter.
Since I use PP and 6,600 miles and 13 months is the longest oil change by far fo time and miles.
Usually I'm doing 3,500 to 6,000 miles and 8 months max I doubt it's sludge. More likely dirt as it has an air filter made from what appears to be used dryer sheets.
For 6,600 miles it appears to have done well, no need to go bigger.
Here's a UOA I never did on my Nissan leaf, an example of oil I would not reuse in another engine.
Since it's transmission fluid it's the wrong viscosity for one and it's got some forbidden glitter in it. Totally unsuitable for use even as flush oil.
Not my car but I paid for half of the oil test.
So what. You didn’t post every