Well, when the spreadsheet was started there were a few more which were dropped from consideration. The Napa was the same as WIX if memory serves. I did notice recently that RockAuto was selling both PF63E and PF63 filters, so did GM begin producing the older style again?
I used Mobil One synthetic since the 1980s. Until about 2010 it was a Group IV base oil. Now it is a Group III, not as refined. I switched vehicles but did not like the morning rattle on my truck. Made an even more exhaustive study of oil and settled on the new ACDelco Full Synthetic. Picked up a quarter mpg and no more rattle. Shell's Rotella Gas Truck has very similar numbers and if the oil becomes to difficult to obtain, I'll switch to that. Again, this research was done in 2018-2019.
Motor is aluminum, so tolerance are not as tight. With M1 filter, pressure on hot summer days would drop into very low 20s, sometimes saw 19 psi even. This was in gear, stopped at a light and after 4K miles. Still well within spec, just not used to it. K&N and new oil hasn't dropped below 24 psi that I've noticed during same conditions, usually a little higher.