No backup
Third party DIMMS?
App use or RAM (contact Adobe)
Reset SMC will all external peripherals and check
Okay your report helps uncover some items.
First, this has nothing to do with immediate issue but I don't see any evidence this computer is being backed up, if that is correct that should be fixed before anything as operating any computer without a full backup is a guarantee of lost data!!!!
A question about the RAM, did you buy it from Apple with 32GB of RAM or did you upgrade the RAM yourself? If you did it yourself, what brand of RAM is installed? This is important because iMacs are VERY sensitive to quality RAM and Kernel Panic's are frequently caused by RAM issues.
Next, the report indicates even though there are 32 GB of RAM, you are running short of RAM. Use Activiity Monitor to see what is using your RAM and then you can go down the road to troubleshoot it.
Finally it appears you have a number of external HD's connected to the computer. One of these may be causing the KPs and other issues. You should reset the SMC 2-3 times with all external peripherals disconnected. Then introduce each one and test for several hours or days and rinse and repeat until you either find the culprit or eliminate that a peripheral is the cause.