Vast majority of "full synthetic" oils on the market are Group III base, which is severely hydrocracked crude.
Very few majority-PAO oils left, and most GTL production is offline after Shell's plant got drone bombed in the early days of the war.
Any of the PGI 10k mile filters (Carquest Premium, NAPA Gold, Microgard Select, STP EL) are your best bet. Same excellent build quality as the M1 filters but a more efficient media.
After an oil change the filter is empty and it takes a few extra seconds to fill with oil before pressure can build; over on BITOG some folks logged their oil pressure readouts on startups and there is a noticeable delay in time to get to full oil pressure between a normal start and an empty...
At risk of reviving an older thread, @CarbonSteel did you ever end up installing a TC in your rear diff? Wondering if I should go whole hog to 75W-140 on mine or somewhere in between, like a -90 or -110.