No keys in the truck, and my gauges are still on, but only fuel and temperature are on. I don’t remember it always doing this but I could be wrong. Is this normal?

(Shifted to 1st just so you can see all gauges. Still does it in park with the keys out)

 

Normal for 2003+Earlier PreHEC InstrumentClusters; Odometer+Gas+Temp Gages hold their value when vehicle is off.
Later HybridElectronicClusters\HECs go completely blank when ignition off & key out;
drives me crazy when I want to read the gas gage or odometer on my wifes later model car & don't have her keys handy.

 

My 1998 Ranger does the same thing. Temp and fuel gauges hold the reading when the key is removed.

 

Yes, can be normal

Next time you need to unhook the battery have a look before and after its unhooked