Hi Jamie,
Here is my take on this, so JMHO. A long time standard for oil pressure is 10 psi for every 1000 rpm. So, 20psi @ 2000rpm, 30psi @ 3000rpm...etc...etc. That being said, pressure is important, but more important than that is flow and the amount of oil getting to the bearings. The more oil the better the lubrication taking place. The more oil going to the bearings, the more heat is displaced to the pan for cooling. The thicker the oil is, may bring up pressure, but also reduces the amount of flow to the bearings.

For more information try reading this thread that I commented to January of 2021. Lots of info and comments from others here. JMHO

http://gmc.mybirdfeeder.net/GMCforum/index.php?t=msg&goto=362020&rid=19&srch=engine+oils#msg_362020