Went on to AppliancePartsPros.com & searched their documentation for the Kenmore Elite 795 series fan. Found the fan motor & a video on how to replace. Noticed that others ordered a motor assembly with their fan motor. Also noticed the associated parts videos showed one fan in the freezer and others showed two. So ordered both parts to be safe, knowing I could return the other part.
I was able to follow the associated video step by step except for the ice maker, which was blocking the removal of the rear wall. It took me an hour to figure out how to remove it without breaking it. Also had to remove the upper rails in my model (freezer compartment underneath) to remove the back wall. Removing the wall was tough the cooling fins were loaded with ice. Had to defrost them with a hair dryer to even unplug the temp sensor and fan.
Turned out my model only had the fan motor (no motor assembly needed). After moving the panel to the repair area, I found a large chuck of ice inside that was probably hitting the fan blades and caused the noise - the fan looked and sounded fine. But I replaced the fan motor anyway since I did not want to have to go through the process again if it was the source.
Buttoned everything up and the fridge is silent again. Happy with the part & the support via the video. I had even purchased a copy of the service manual to learn how to dissemble the freezer but would have never succeeded without the video.